1 - ________ is merely a modification of the uniform system where large quantities of advance growth of various ages and size even up to trees of 40 cm diameter are retained as part of the future crop:
1 - ________ is merely a modification of the uniform system where large quantities of advance growth of various ages and size even up to trees of 40 cm diameter are retained as part of the future crop:
Coppice system
2 - 2n denotes:
2 - 2n denotes:
Number of types of gametes produced by F1
3 - A cell or an organism having one chromosome pair in addition to the normal somatic compliment of the species is:
3 - A cell or an organism having one chromosome pair in addition to the normal somatic compliment of the species is:
Tetrasomic
4 - A character dermined by many genes and does not show discrete variation is known as:
4 - A character dermined by many genes and does not show discrete variation is known as:
Qualitative character
5 - A complex of communities of plants and animals of a region existing under identical climatic conditions is called as:
5 - A complex of communities of plants and animals of a region existing under identical climatic conditions is called as:
Biome
6 - A condition in which pollination and fertilization take place in an unopened flower is termed as:
6 - A condition in which pollination and fertilization take place in an unopened flower is termed as:
Cleistogamy
7 - A criss-cross inheritance is shown by:
7 - A criss-cross inheritance is shown by:
Sex-linked character
8 - A cybrid is:
8 - A cybrid is:
A hybrid formed by cell fusion
9 - A dry, one chambered and one seeded fruit developing from a superior ovary with the hard and woody pericarp is:
9 - A dry, one chambered and one seeded fruit developing from a superior ovary with the hard and woody pericarp is:
Composite fruit
10 - A fruit, which develops from an inflorescence, is known as:
10 - A fruit, which develops from an inflorescence, is known as:
Composite fruit
11 - A fruit, which is collection of simple fruits developing from the apocarpous pistil of a flower, is known as:
11 - A fruit, which is collection of simple fruits developing from the apocarpous pistil of a flower, is known as:
Aggregate fruit
12 - A generative nucleus in the male gametophyte divides _____ to form two male gametes:
12 - A generative nucleus in the male gametophyte divides _____ to form two male gametes:
Mitotically
13 - A head or capitulum's is characteristic of:
13 - A head or capitulum's is characteristic of:
Compositeae
14 - A homozygous line developed by self-fertilization in a cross-pollinated crop is termed as:
14 - A homozygous line developed by self-fertilization in a cross-pollinated crop is termed as:
Inbred
15 - A hybrid is always:
15 - A hybrid is always:
Heterozygous
16 - A large unit of natural vegetation in an area under identical condition (climatic) is called:
16 - A large unit of natural vegetation in an area under identical condition (climatic) is called:
Plant formation
17 - A maintainer line is:
17 - A maintainer line is:
Male fertile but cannot restore fertility
18 - A male child would be born to parents if:
18 - A male child would be born to parents if:
The genetic composition of the child includes XY combination of chromosomes
19 - A male gametophyte in angiosperms contains:
19 - A male gametophyte in angiosperms contains:
Two male gametes and one tube nucleusnucleus
20 - A mendelian population means:
20 - A mendelian population means:
Random-mating population
21 - A method of breeding most commonly used when the desired variation is required to be induced in a vegetatively propagated crop is:
21 - A method of breeding most commonly used when the desired variation is required to be induced in a vegetatively propagated crop is:
Polyploidy
22 - A mixture of two immiscible liquids shaken up is:
22 - A mixture of two immiscible liquids shaken up is:
An emulsion
23 - A plant bearing both male and female flowers is said to be:
23 - A plant bearing both male and female flowers is said to be:
Monoecious
24 - A plant breeder is interested to control pollination to:
24 - A plant breeder is interested to control pollination to:
Both of these
25 - A plant cell when put into a hypotonic solution, it unlike animal cell does not brust because:
25 - A plant cell when put into a hypotonic solution, it unlike animal cell does not brust because:
It has inelastic cell wall
26 - A plant with 2n = 20 will have how many linkage group:
26 - A plant with 2n = 20 will have how many linkage group:
10
27 - A plant with genotype Gg Ww will produce gametes of which of the following types?
27 - A plant with genotype Gg Ww will produce gametes of which of the following types?
GW, gw, gW,Gw
28 - A restorer gene is present in:
28 - A restorer gene is present in:
Nucleus
29 - A state of meiotic cell division when homologous chromosomes separate and move to different poles is known as:
29 - A state of meiotic cell division when homologous chromosomes separate and move to different poles is known as:
Anaphase I
30 - A successful establishment of vegetation in a new locality means:
30 - A successful establishment of vegetation in a new locality means:
Ecesis
31 - Acclimatisation is:
31 - Acclimatisation is:
A process of adjustment by crop plants to environment
32 - According to position of the ovule within the ovary, an ovule may be:
32 - According to position of the ovule within the ovary, an ovule may be:
All of the above
33 - Actual petrified remains of ancient plants and animals or impressions left by them in rocks are called:
33 - Actual petrified remains of ancient plants and animals or impressions left by them in rocks are called:
Fossils
34 - Adjustment of individual to their environment by mean of special structures or of function of spoken of:
34 - Adjustment of individual to their environment by mean of special structures or of function of spoken of:
Adaptation
35 - Adventitious roots grow from:
35 - Adventitious roots grow from:
Any part of the plant body other than the radical
36 - After the cell has undergone mitosis, the amount of DNA in daughter cells will be:
36 - After the cell has undergone mitosis, the amount of DNA in daughter cells will be:
Equal to the parent cell
37 - Albinism in plants is associated with:
37 - Albinism in plants is associated with:
Recessive lethal
38 - Alternative forms of a gene is known a:
38 - Alternative forms of a gene is known a:
Allele
39 - An anticodonis a sequence of three nitrogenous bases found on:
39 - An anticodonis a sequence of three nitrogenous bases found on:
tRNA
40 - An association can be:
40 - An association can be:
All of the above
41 - An egg or sperm cell in plants is called:
41 - An egg or sperm cell in plants is called:
Gamete
42 - An embryo sac of angiosperms generally contains:
42 - An embryo sac of angiosperms generally contains:
Eight nuclei
43 - An endospermic cell of a seed after somatic chromosome number (2n = 20) will have:
43 - An endospermic cell of a seed after somatic chromosome number (2n = 20) will have:
30 Chromosomes
44 - An individual having different alleles for any gene pair and producting two kinds of gametes is known as:
44 - An individual having different alleles for any gene pair and producting two kinds of gametes is known as:
Heterozygous
45 - An organism having the gametic chromosome numbers is called as:
45 - An organism having the gametic chromosome numbers is called as:
Haploid
46 - An organism with one extra chromosome (2n + 1), is instead of the normal diploid (2n) is known as:
46 - An organism with one extra chromosome (2n + 1), is instead of the normal diploid (2n) is known as:
Trisomic
47 - Ascending portion of the axis of the plant, developing directly from the plumule and bears leaves, braches and flower is known as:
47 - Ascending portion of the axis of the plant, developing directly from the plumule and bears leaves, braches and flower is known as:
None of above
48 - At the molecular level point mutations are due to:
48 - At the molecular level point mutations are due to:
Alterations of sequences of base in DNA
49 - At the stage incipient plasmolysis the turgor pressure is:
49 - At the stage incipient plasmolysis the turgor pressure is:
Zero
50 - At the stage of fully turgid cell, the suction pressure will be:
50 - At the stage of fully turgid cell, the suction pressure will be:
Zero
51 - ATP synthesis occurs in:
51 - ATP synthesis occurs in:
Chloroplast and mitochondria
52 - Bacteria, protozoa and other living plants and animals are:
52 - Bacteria, protozoa and other living plants and animals are:
Biotic factors
53 - Baldness in human being is a:
53 - Baldness in human being is a:
Sex-influenced character
54 - Barely is a ______ pollinated crop:
54 - Barely is a ______ pollinated crop:
Self
55 - Biffin in 1905 announced, that resistance to yellow rust of wheat is governed by ______ gene in crosses:
55 - Biffin in 1905 announced, that resistance to yellow rust of wheat is governed by ______ gene in crosses:
Single recessive
56 - Binomial system of Nomenclature means that the name of plant is made up of two words, which designate:
56 - Binomial system of Nomenclature means that the name of plant is made up of two words, which designate:
Genus and species
57 - Bread wheat is:
57 - Bread wheat is:
Auto-allopolyploid
58 - Bulk population breeding is suitable for:
58 - Bulk population breeding is suitable for:
Small grains
59 - Carolus Linnaeus is credited with introducing the:
59 - Carolus Linnaeus is credited with introducing the:
Binomial system of nomenclature
60 - Cauliflower, cabbage, broccoli, kohlrabi and brussels sprouts have been derived from wild cabbage that, still grows in coastal regions of:
60 - Cauliflower, cabbage, broccoli, kohlrabi and brussels sprouts have been derived from wild cabbage that, still grows in coastal regions of:
Europe and N. Africa
61 - Characteristic feature of the hydrophytes is:
61 - Characteristic feature of the hydrophytes is:
All the above
62 - Characteristic feature of xerophytes is:
62 - Characteristic feature of xerophytes is:
All of the above
63 - Chauncey Goodrich was the first _____ to publish a paper dealing with resistance of potatoes to the blight diseases:
63 - Chauncey Goodrich was the first _____ to publish a paper dealing with resistance of potatoes to the blight diseases:
American
64 - China rose is a :
64 - China rose is a :
Shrub
65 - Chromosome numbers in somatic cells of a maize plant are:
65 - Chromosome numbers in somatic cells of a maize plant are:
20
66 - Chromosome which pair at meiotic prophase and are similar size, shape, structure and function are known as:
66 - Chromosome which pair at meiotic prophase and are similar size, shape, structure and function are known as:
Homologous
67 - CIMMYT is located at:
67 - CIMMYT is located at:
Miexico
68 - Cliestogamy encourages:
68 - Cliestogamy encourages:
Self pollination
69 - Clone in general is:
69 - Clone in general is:
Heterozygous
70 - Commercial banana have ______ instead of 22 chromosomes of ordinary diploid varieties:
70 - Commercial banana have ______ instead of 22 chromosomes of ordinary diploid varieties:
33
71 - Complementary gene produces phenotypic ratio:
71 - Complementary gene produces phenotypic ratio:
9;7
72 - Composites are developed by using:
72 - Composites are developed by using:
Advanced generation seed mixtures obtained from high yielding intervarietal or interracial crosses
73 - Conifers are abundant in:
73 - Conifers are abundant in:
Temperate zone
74 - Cotton:
74 - Cotton:
Is an often-cross pollinated crop
75 - Creation of the world by God is basis of the:
75 - Creation of the world by God is basis of the:
Theory of special creation
76 - Cross between cytoplasmic male sterile x cytoplasmic male fertile:
76 - Cross between cytoplasmic male sterile x cytoplasmic male fertile:
Produce sterile F1
77 - Cross of F1 hybrid with either parent is called:
77 - Cross of F1 hybrid with either parent is called:
Test cross
78 - Crossing over occurs at:
78 - Crossing over occurs at:
Four strand stage
79 - Cuscuta is:
79 - Cuscuta is:
Total stem parasite
80 - Cytogenetically, the definitive nucleus is:
80 - Cytogenetically, the definitive nucleus is:
Diploid
81 - Dallus is:
81 - Dallus is:
An undifferentiated mass of cells
82 - Date palm is:
82 - Date palm is:
Dioecious
83 - Degenerated parts of plants and animals, which do not serve any useful purpose, are known as:
83 - Degenerated parts of plants and animals, which do not serve any useful purpose, are known as:
Vestigial structures
84 - Deodar normally found in:
84 - Deodar normally found in:
In the Hills of Punjab
85 - Despite conspicuous deterioration of maize upon continuous setting, it is more tolerant to inbreeding than:
85 - Despite conspicuous deterioration of maize upon continuous setting, it is more tolerant to inbreeding than:
Alfalfa
86 - Details of the kreb's cycle were worked out by the use of:
86 - Details of the kreb's cycle were worked out by the use of:
Radioactive carbon compounds
87 - Development and formation of pollen grains in anther of the stamen is known as:
87 - Development and formation of pollen grains in anther of the stamen is known as:
Microsporogenesis
88 - Development of a fruit without fertilization is known as:
88 - Development of a fruit without fertilization is known as:
Parthenogenesis
89 - Development of seed without-sexual process is:
89 - Development of seed without-sexual process is:
Apomixes
90 - Development of the pollen tube, the seed and the 3n endosperm, double fertilization is characteristic features of:
90 - Development of the pollen tube, the seed and the 3n endosperm, double fertilization is characteristic features of:
Angiosperms
91 - Disease reaction is by and large, a process:
91 - Disease reaction is by and large, a process:
Chemical
92 - Disease rsistance in barley is:
92 - Disease rsistance in barley is:
Qualitative characteristics
93 - DNA exists as a double helix as a result of hydrogen bonding between:
93 - DNA exists as a double helix as a result of hydrogen bonding between:
Nucleohistones
94 - DNA polymerase:
94 - DNA polymerase:
Helps is DNA replication
95 - DPD is the index of sucking power and is also known as:
95 - DPD is the index of sucking power and is also known as:
Suction pressure
96 - During mitotic cell division the total chromosome number:
96 - During mitotic cell division the total chromosome number:
Remains the same
97 - Each cell of the female gametophyte is hapoid except:
97 - Each cell of the female gametophyte is hapoid except:
Definitive nucleus
98 - Each gramme of water transpired absorbs ______ kj of latent heat from the leaf and its environment:
98 - Each gramme of water transpired absorbs ______ kj of latent heat from the leaf and its environment:
3.4-3.5
99 - Each mature anther has:
99 - Each mature anther has:
Four pollen sacs
100 - Each megaspore mother cell finally produces:
100 - Each megaspore mother cell finally produces:
Only one megaspore
101 - Each pollen mother cell produces four haploid cells as a result of:
101 - Each pollen mother cell produces four haploid cells as a result of:
Meiosis
102 - Each stamen is differentiated into:
102 - Each stamen is differentiated into:
All of the above
103 - Electron microscope was invented by:
103 - Electron microscope was invented by:
Knoll and Ruska
104 - Emasculation is:
104 - Emasculation is:
Removal of male parts from a bisexual flower
105 - Embryo-sac is:
105 - Embryo-sac is:
Female gametophyte
106 - Endosperm is store house for germinating embryo and it contains:
106 - Endosperm is store house for germinating embryo and it contains:
All the above
107 - Epicalyx is the characteristic of the family:
107 - Epicalyx is the characteristic of the family:
Malvaceae
108 - Epistasis should be crefully distinguished from dominance, which refers to non-additivity of alleles at:
108 - Epistasis should be crefully distinguished from dominance, which refers to non-additivity of alleles at:
Different loci of a homologous chromosome
109 - Exchange of genetic material takes place between non-sister chromatids of homologous chromosomes during the:
109 - Exchange of genetic material takes place between non-sister chromatids of homologous chromosomes during the:
Four stand stage in prophase I
110 - Female reproductive organ in the flower is:
110 - Female reproductive organ in the flower is:
Carpals
111 - Flower colour in plants is a:
111 - Flower colour in plants is a:
Qualitative chracter
112 - Flower is specialized:
112 - Flower is specialized:
Leaf
113 - Flowers having both androecium's and gynoecium's are said to be:
113 - Flowers having both androecium's and gynoecium's are said to be:
Hermaphrodite
114 - For Hardy - Weinberg law to operate:
114 - For Hardy - Weinberg law to operate:
ll the above
115 - Formation of new genes takes place due to:
115 - Formation of new genes takes place due to:
Mutation
116 - Fruit of candytuft is known as:
116 - Fruit of candytuft is known as:
Silicula
117 - Fruit of pea is known as:
117 - Fruit of pea is known as:
Legume
118 - Fruit of sunflower is:
118 - Fruit of sunflower is:
Cypsela
119 - Fruits of calotropis are:
119 - Fruits of calotropis are:
Follicle
120 - Fusion of the one sperm (male gamete) and definitive nucleus results in the formation of:
120 - Fusion of the one sperm (male gamete) and definitive nucleus results in the formation of:
Endosperm
121 - Generally embryosac is:
121 - Generally embryosac is:
Bisporic
122 - Genes are made up of:
122 - Genes are made up of:
DNA only
123 - Genetics is the study of:
123 - Genetics is the study of:
Heredity and variation
124 - Genotype x Environment interaction would take place when there is/are:
124 - Genotype x Environment interaction would take place when there is/are:
Two genotypes and one environment
125 - Germplasm means:
125 - Germplasm means:
A collection of genetic material
126 - Gibberellins are now commercially used into increase sugarcane growth and sugar yields :
126 - Gibberellins are now commercially used into increase sugarcane growth and sugar yields :
Hawaii
127 - Ginger and Turmeric are example of modified stem:
127 - Ginger and Turmeric are example of modified stem:
Rhizome
128 - Given that the somatic cromosome number of Triticum aestivum is 2n = 6x = 42, which one of the following pairs is correctly matched?
128 - Given that the somatic cromosome number of Triticum aestivum is 2n = 6x = 42, which one of the following pairs is correctly matched?
Tetrasome
129 - Group of plants with similar characteristics of any rank is termed:
129 - Group of plants with similar characteristics of any rank is termed:
Taxon
130 - Gynoecium or pistil in the female whorl differentiated into:
130 - Gynoecium or pistil in the female whorl differentiated into:
All of the above
131 - Heritability may be defined as the:
131 - Heritability may be defined as the:
Proportion of phenotypic variability, which is due to heredity
132 - Heterosis is commercially exploited in:
132 - Heterosis is commercially exploited in:
Cross pollinated species
133 - Heterosis over the better parent is called as:
133 - Heterosis over the better parent is called as:
Heterbeltiosis
134 - Holophytes growing on muddy swarmps form special vegetation known as:
134 - Holophytes growing on muddy swarmps form special vegetation known as:
Hangrove forests
135 - How many cells will be produced from a cell if the cell divides meiotically?
135 - How many cells will be produced from a cell if the cell divides meiotically?
4
136 - Hugo de Vries, who defined the 'mutation', was:
136 - Hugo de Vries, who defined the 'mutation', was:
Dutch Botanist
137 - Hybrid seeds can be produced through open pollination with the use of:
137 - Hybrid seeds can be produced through open pollination with the use of:
Inbreds
138 - Hydrilla is a:
138 - Hydrilla is a:
Hydrophyte
139 - ICRISAT deals with:
139 - ICRISAT deals with:
Millets
140 - If a character is cytoplasmically controlled then:
140 - If a character is cytoplasmically controlled then:
The progeny resembles female parent
141 - If a dihybrid is test crossed, the phenotypic ratio of progeny will be:
141 - If a dihybrid is test crossed, the phenotypic ratio of progeny will be:
1:1:1:1
142 - If a dihybrid without genic interaction is selfed the following ratio is obtained in F2:
142 - If a dihybrid without genic interaction is selfed the following ratio is obtained in F2:
9:3:3:1
143 - If a membrane allows the passage of both solvent and solute molecules it is said to be:
143 - If a membrane allows the passage of both solvent and solute molecules it is said to be:
Permeable
144 - If dissolved sugar in pure water the resulting solution will have osmotic potential than that of pure water:
144 - If dissolved sugar in pure water the resulting solution will have osmotic potential than that of pure water:
More negative
145 - If more solute is added to a saturated solution, it settles down but if heated the excess amount also gets dissolved. Such a solution said to be:
145 - If more solute is added to a saturated solution, it settles down but if heated the excess amount also gets dissolved. Such a solution said to be:
Super saturated
146 - If parents differ in ten gene pairs, no selection is done; six back crosses will produce a population having ______ per cent homozygous and identical individuals to recurrent parent at all ten loci:
146 - If parents differ in ten gene pairs, no selection is done; six back crosses will produce a population having ______ per cent homozygous and identical individuals to recurrent parent at all ten loci:
85
147 - If the cells of a plant root tip contain chromosomes will be found in its pollen grains?
147 - If the cells of a plant root tip contain chromosomes will be found in its pollen grains?
8
148 - If the particles of dispersed phase have an affinity towards the particles of the dispersion medium the colloidal system is known as:
148 - If the particles of dispersed phase have an affinity towards the particles of the dispersion medium the colloidal system is known as:
Lyophilic
149 - In ______ , the first studies on artificial hybridization for which yields were reported were those of Beal during the period between 1877 and 1882:
149 - In ______ , the first studies on artificial hybridization for which yields were reported were those of Beal during the period between 1877 and 1882:
Maize
150 - In ______, pollen dispersal is poor and seed set is likely to be low on male sterile plants:
150 - In ______, pollen dispersal is poor and seed set is likely to be low on male sterile plants:
Tomato
151 - In Angiosperms:
151 - In Angiosperms:
Sporophyte is complex and gametophyte incospicuous
152 - In asparagus one or more short, green cylindrical or sometimes flattened branches of limited growth develop from node of stem, such a branch is known as:
152 - In asparagus one or more short, green cylindrical or sometimes flattened branches of limited growth develop from node of stem, such a branch is known as:
Cladode
153 - In bajra:
153 - In bajra:
Cytoplasmic genetic male sterility is found
154 - In C4 pathway CO2 combines with:
154 - In C4 pathway CO2 combines with:
Ribulose diphosphate
155 - In China rose flower is:
155 - In China rose flower is:
Hypogynous
156 - In compositeae the gynoecium is syncarpous bicarpellary with:
156 - In compositeae the gynoecium is syncarpous bicarpellary with:
Free central placentation
157 - In cotton, the popularly grown commercial hybrid varalaxmi's is the product of:
157 - In cotton, the popularly grown commercial hybrid varalaxmi's is the product of:
Interspecific hybridization between Gossypium hirsutum and Gossypium barbadense
158 - In cruciferae the stamens are said to be:
158 - In cruciferae the stamens are said to be:
Tetradidynamous
159 - In famtly malvaceae the stamens are:
159 - In famtly malvaceae the stamens are:
Monoadelphous
160 - In Ficus (banyan, pepal, fig) the inflorescence is:
160 - In Ficus (banyan, pepal, fig) the inflorescence is:
Hypanthodium
161 - In mass selection, plants are selected on the basis of:
161 - In mass selection, plants are selected on the basis of:
Phenotypes
162 - In pedigree breeding single plants are selected in which one of the following generation:
162 - In pedigree breeding single plants are selected in which one of the following generation:
F2
163 - In potato the inflorescence is:
163 - In potato the inflorescence is:
Helicoid
164 - In Primula sp:
164 - In Primula sp:
Heteromorphic incompatibility found
165 - In RNA, nitrogen bases are same as in DNA except:
165 - In RNA, nitrogen bases are same as in DNA except:
Uracil instead of Thymlnine
166 - In self-incompatibility system:
166 - In self-incompatibility system:
Pollen does not germinate on self-pollination
167 - In solanaceae, the flowers are:
167 - In solanaceae, the flowers are:
Actinomorphic, bisexual and hypogynous
168 - In sorghum somatic chromosome number is 20. What would be its chromosome number in the endosperm?
168 - In sorghum somatic chromosome number is 20. What would be its chromosome number in the endosperm?
30
169 - In sweet pea gene C or P alone produces white flower, where as both C and P are needed to produce purple coloured flower. In a particular cross between two white flowered plants the offsprings were one half purple and one-half white. The possible genotype
169 - In sweet pea gene C or P alone produces white flower, where as both C and P are needed to produce purple coloured flower. In a particular cross between two white flowered plants the offsprings were one half purple and one-half white. The possible genotype
ccPp x CCpp
170 - In the cymose inflorescence the flowers develop in:
170 - In the cymose inflorescence the flowers develop in:
Basipetal succession
171 - In the flowering plants the process of fertilization is first discovered by:
171 - In the flowering plants the process of fertilization is first discovered by:
Strasburger
172 - In the ovary of 'marigold' the placentation is:
172 - In the ovary of 'marigold' the placentation is:
Basal
173 - In the pitcher plant, the pitcher is modification of:
173 - In the pitcher plant, the pitcher is modification of:
Leaf
174 - In the simple ovary (of one carpel) there is one common type of placentation known as:
174 - In the simple ovary (of one carpel) there is one common type of placentation known as:
Marginal
175 - In wheat and oat there are _____ genes for red versus white kernels:
175 - In wheat and oat there are _____ genes for red versus white kernels:
Three
176 - In wheat, cross-pollination is:
176 - In wheat, cross-pollination is:
Less than 5%
177 - In which one of the following crops maximum exploitation of hybrid vigour during the last three decades has been done?
177 - In which one of the following crops maximum exploitation of hybrid vigour during the last three decades has been done?
Maize
178 - In which part of the cell, does protein synthesis take place?
178 - In which part of the cell, does protein synthesis take place?
Ribosomes
179 - Inflorescence of wheat ear is:
179 - Inflorescence of wheat ear is:
Spike
180 - International Rice Research Institute (IRRI) is situated in:
180 - International Rice Research Institute (IRRI) is situated in:
Philippines
181 - It has been estimated that a miize tassel produces at least _____ pollen grains for each kernel.
181 - It has been estimated that a miize tassel produces at least _____ pollen grains for each kernel.
25000
182 - It is an established fact that higher and more complex forms of plants and animals have evolved from:
182 - It is an established fact that higher and more complex forms of plants and animals have evolved from:
Earlier and simple forms
183 - Johansen proposed:
183 - Johansen proposed:
Pure line theory
184 - Kreb's cycle begins with:
184 - Kreb's cycle begins with:
Acetyl COA
185 - Later formed rocks show fossils of:
185 - Later formed rocks show fossils of:
Simpler and more recent types
186 - Leaf of the Mimosa is:
186 - Leaf of the Mimosa is:
Bipinnate
187 - Magnification of an object by electron microscope is:
187 - Magnification of an object by electron microscope is:
More than 2,00,000 X
188 - Maize is:
188 - Maize is:
Maonecious plant
189 - Male gamete carries ______ chromosome numbers:
189 - Male gamete carries ______ chromosome numbers:
Non-permeable
190 - Mango fruit is a:
190 - Mango fruit is a:
Drupe
191 - Mangrove plants show adaptation like:
191 - Mangrove plants show adaptation like:
All of the above
192 - Mating between two individuals related by descent is:
192 - Mating between two individuals related by descent is:
Inbreeding
193 - Megaspore mother cell produces four megaspores out of which usually:
193 - Megaspore mother cell produces four megaspores out of which usually:
Only one megaspore is functional and the remaining three megaspores abort
194 - Meiosis is essential for the organism for:
194 - Meiosis is essential for the organism for:
Keeping the number of chromosomes constant from one generation to the other
195 - Meiosis occurs in:
195 - Meiosis occurs in:
Generative cells
196 - Mendel is famous for:
196 - Mendel is famous for:
Propounding the laws of inheritance
197 - Mendok is a gametocide used for inducing male sterility in:
197 - Mendok is a gametocide used for inducing male sterility in:
Maize
198 - Method of breeding can be used for studying the ancestral characteristic:
198 - Method of breeding can be used for studying the ancestral characteristic:
Pedigree method
199 - Microsporogenesis occurs in:
199 - Microsporogenesis occurs in:
Anthers
200 - Microsporogenesis occurs in:
200 - Microsporogenesis occurs in:
Stamens
201 - Modern population genetics is found on a proposition dedeced independently by Hardy in England in 1908 and _____ in Germany n 1909.
201 - Modern population genetics is found on a proposition dedeced independently by Hardy in England in 1908 and _____ in Germany n 1909.
Weinberg
202 - Monoploid is also a:
202 - Monoploid is also a:
Haploid
203 - Most of the mutation have effect:
203 - Most of the mutation have effect:
Deleterious
204 - Multiline varieties are mixtures of:
204 - Multiline varieties are mixtures of:
Several similar pure lines having different genes for disease resistance
205 - Mutation is known to be due to change in genes:
205 - Mutation is known to be due to change in genes:
All the above
206 - Neither beginning nor end to the universe is basis of:
206 - Neither beginning nor end to the universe is basis of:
Theory of eternity of present condition
207 - Nilsson-Ehle of ______ was apparently the first to use the bulk population method to breed superior crop varieties:
207 - Nilsson-Ehle of ______ was apparently the first to use the bulk population method to breed superior crop varieties:
Sweden
208 - Normal female in human being is:
208 - Normal female in human being is:
Homogametic sex
209 - Nucleus seed is:
209 - Nucleus seed is:
100% pure
210 - Number of chromosome in endosperm is:
210 - Number of chromosome in endosperm is:
3n
211 - Nutritional improvement for the tryptophan content has been achieved in a _____ cell-line:
211 - Nutritional improvement for the tryptophan content has been achieved in a _____ cell-line:
Tobacco
212 - Oat is said to be:
212 - Oat is said to be:
Self pollinated crop
213 - Observation of Hugo de Vries were based on:
213 - Observation of Hugo de Vries were based on:
Oenothera lamarkiana
214 - Onion and Garlic are example of:
214 - Onion and Garlic are example of:
Bulb
215 - Operon concept was given by:
215 - Operon concept was given by:
Jacob and Manod
216 - Orange or lemon fruit is known as:
216 - Orange or lemon fruit is known as:
Hesperidium
217 - Osmotic pressure of cells sap is high among below given categories in:
217 - Osmotic pressure of cells sap is high among below given categories in:
Halophyte
218 - Osra belongs to the family:
218 - Osra belongs to the family:
Malvaceae
219 - Oxisomes in plant cells are concerned with:
219 - Oxisomes in plant cells are concerned with:
Kreb's cycle
220 - Para-mutation in _____ is perhaps the one and only example of blending of alleles:
220 - Para-mutation in _____ is perhaps the one and only example of blending of alleles:
Maize
221 - Pea has stamens:
221 - Pea has stamens:
Diadelphous
222 - Persons with the following blood group are universal donor:
222 - Persons with the following blood group are universal donor:
O
223 - Phylloclade is:
223 - Phylloclade is:
Aerial modification of stem
224 - Physical and chemical properties of soil its water and air contents are included in:
224 - Physical and chemical properties of soil its water and air contents are included in:
Edaphic factors
225 - Physiologically dry soil is:
225 - Physiologically dry soil is:
with saline water
226 - Pigment, which is responsible for skin colour, is:
226 - Pigment, which is responsible for skin colour, is:
Melanin
227 - Pink (NN) flowered plants crossed with blue (nn) flowered plants gave black (Nn) flowered plants in F1 generation. If F1 plants dre selfed, which of the following will be the phenotype of F2 progeny?
227 - Pink (NN) flowered plants crossed with blue (nn) flowered plants gave black (Nn) flowered plants in F1 generation. If F1 plants dre selfed, which of the following will be the phenotype of F2 progeny?
1/4 pink, 1/2 black, 1/4 blue
228 - Plants that attach themselves to any neighbouring object often by means of some special devices and climb it are called:
228 - Plants that attach themselves to any neighbouring object often by means of some special devices and climb it are called:
Climbers
229 - Plants that grow under average condition of temperature and moisture are:
229 - Plants that grow under average condition of temperature and moisture are:
Mesophytes
230 - Plants that grown upon other plants but do not absorb food from them are called:
230 - Plants that grown upon other plants but do not absorb food from them are called:
Epiphytes
231 - Plants, which feed upon insects and small animald absorbing only nitrogenous compounds, are called:
231 - Plants, which feed upon insects and small animald absorbing only nitrogenous compounds, are called:
Carnivorous
232 - Plasmid can:
232 - Plasmid can:
Can do all the above
233 - Pneumatophores or respiratory roots are meant for:
233 - Pneumatophores or respiratory roots are meant for:
Respiration
234 - Pointed gourd is a :
234 - Pointed gourd is a :
Dioecious plant
235 - Pollination taking place between the flowers borne by the same parent is called:
235 - Pollination taking place between the flowers borne by the same parent is called:
Geitonogamy
236 - Pollination taking place between two flowers (bisexual or unisexual) borne by two separate plants of the same species is called:
236 - Pollination taking place between two flowers (bisexual or unisexual) borne by two separate plants of the same species is called:
Cross pollination
237 - Polygenes affecting the same trait, with each enhancing the phenotype are termed as:
237 - Polygenes affecting the same trait, with each enhancing the phenotype are termed as:
Additive factors
238 - Population improvement is used:
238 - Population improvement is used:
To accumulate favourable alleles
239 - Pototo and Jerusalem artichoke are example of:
239 - Pototo and Jerusalem artichoke are example of:
Tuber
240 - Probably the most useful measurable property in the soil -plant-air system is:
240 - Probably the most useful measurable property in the soil -plant-air system is:
Water Potential
241 - Progeny of a hybrid plant:
241 - Progeny of a hybrid plant:
Segregation
242 - Prop or still roots are found in:
242 - Prop or still roots are found in:
Banyan tree
243 - Protoplasm is a:
243 - Protoplasm is a:
Polyphonic colloidal system
244 - Pseudo-fertility may also occur late in the season as in:
244 - Pseudo-fertility may also occur late in the season as in:
Tobacco
245 - Pure line is:
245 - Pure line is:
The progeny of selfed homozygous plant
246 - Pureline selection is:
246 - Pureline selection is:
Used to improve self-pollinated crops
247 - Quarantine is:
247 - Quarantine is:
The process of observation of alien material
248 - Rainfall, temperature, light, wind and humidity are:
248 - Rainfall, temperature, light, wind and humidity are:
Climatic factors
249 - Random assortment of genes will occur if the gene are located on:
249 - Random assortment of genes will occur if the gene are located on:
Different chromosomes
250 - Recessive lethal genes are carried in the:
250 - Recessive lethal genes are carried in the:
Hetrozygous form
251 - Recurrent selection is mostly used in:
251 - Recurrent selection is mostly used in:
Cross pollinated crops
252 - Reduction Division in micro-sporogenesis occurs when:
252 - Reduction Division in micro-sporogenesis occurs when:
Pollen mother cells are produced from & porocytes
253 - Registered seed is directly produced from:
253 - Registered seed is directly produced from:
Foundation seed
254 - Replacement of purine by pyrimidine and vice-versa is known as:
254 - Replacement of purine by pyrimidine and vice-versa is known as:
Transversion
255 - Restorer gene is needed:
255 - Restorer gene is needed:
To bring fertility in male sterile plants
256 - Rice varieties IR 20, IR 26 and IR 36 have shown better resistance to:
256 - Rice varieties IR 20, IR 26 and IR 36 have shown better resistance to:
Brown plant hopper
257 - Root bear:
257 - Root bear:
Unicelluar hairs
258 - Root has:
258 - Root has:
All of the above
259 - Secondary nucleus in the embryosac is:
259 - Secondary nucleus in the embryosac is:
Diploid
260 - Seeds of monocotyledons are:
260 - Seeds of monocotyledons are:
Albuminous or non-endospermic
261 - Seeds of pea, gram and beans are:
261 - Seeds of pea, gram and beans are:
Ex-albuminous
262 - Selfing of a plant increases:
262 - Selfing of a plant increases:
Homozygosity
263 - Sex in Drosophila is governed by the following mechanism:
263 - Sex in Drosophila is governed by the following mechanism:
X autosomes ratio
264 - Single gene affecting more than one character is:
264 - Single gene affecting more than one character is:
Pleiotropy
265 - Specific combining ability of the parents should be high in order to develop:
265 - Specific combining ability of the parents should be high in order to develop:
Hybrids
266 - Spikelets are characteristic of the family:
266 - Spikelets are characteristic of the family:
Gramineae
267 - Sporogenesis means:
267 - Sporogenesis means:
Development and formation of spores
268 - Stems often bear:
268 - Stems often bear:
Multicellular hairs
269 - Sterility incompatibility of distant crosses can e overcome to produce hybrids by:
269 - Sterility incompatibility of distant crosses can e overcome to produce hybrids by:
Embryo culture
270 - Sterility is most pronounced in the F1 generation following:
270 - Sterility is most pronounced in the F1 generation following:
Interspecific hybridization
271 - Stilt roots are produced from:
271 - Stilt roots are produced from:
Stem and branches
272 - Sudden and sharp change in individual and is directly inherited by the offspring is called:
272 - Sudden and sharp change in individual and is directly inherited by the offspring is called:
Mutation
273 - Sunflower is:
273 - Sunflower is:
Annual herb
274 - Superiority of heterozygote leads to:
274 - Superiority of heterozygote leads to:
Fixation of recessive allele
275 - System of classification proposed by Hutchinson is:
275 - System of classification proposed by Hutchinson is:
Phylogenetic
276 - Tetraploid potato has 48 chromosomes, whereas ordinary piploid species have _______ chromosomes:
276 - Tetraploid potato has 48 chromosomes, whereas ordinary piploid species have _______ chromosomes:
24
277 - The application of principles of genetics for the improvement of mankind is:
277 - The application of principles of genetics for the improvement of mankind is:
Eugenics
278 - The attraction between two dissimilar molecules is:
278 - The attraction between two dissimilar molecules is:
Adhesion
279 - The basis on which evolution works is:
279 - The basis on which evolution works is:
Variations
280 - The best method to break the unfavourable linkage is:
280 - The best method to break the unfavourable linkage is:
Diallel selective mating
281 - The best method to carry forward the maximum number of genotypes/genes to the advanced generations against the force of natural selection is:
281 - The best method to carry forward the maximum number of genotypes/genes to the advanced generations against the force of natural selection is:
Single seed descent method
282 - The best-known artificial system of classification is that promulgated by:
282 - The best-known artificial system of classification is that promulgated by:
Linnaeus
283 - The botanical name of the onion is:
283 - The botanical name of the onion is:
Allum cepa
284 - The branch of genetics concerned with the study of frequencies of mating populations is:
284 - The branch of genetics concerned with the study of frequencies of mating populations is:
Population genetics
285 - The cell sap of cell A has an osmotic potential of -14 bars and turgor pressure of 4 bars. Cell B has a water potential of -16 bars and osmotic potential of -24 bars. The water movement will be:
285 - The cell sap of cell A has an osmotic potential of -14 bars and turgor pressure of 4 bars. Cell B has a water potential of -16 bars and osmotic potential of -24 bars. The water movement will be:
From A to B
286 - The characteristics of the original group system was the undulating profile of the regenerated corp obtained by reason of the considerable variation in age between the groups of regeneration:
286 - The characteristics of the original group system was the undulating profile of the regenerated corp obtained by reason of the considerable variation in age between the groups of regeneration:
Gayer's line
287 - The chromosomal aberrations include:
287 - The chromosomal aberrations include:
All of these
288 - The chromosomes are attached to the spindle fibre by means of:
288 - The chromosomes are attached to the spindle fibre by means of:
Centromere
289 - The commonest form of the ovule is:
289 - The commonest form of the ovule is:
Anatropous
290 - The components of synthetic population would have already been tested for:
290 - The components of synthetic population would have already been tested for:
CGA
291 - The condition in which the anthers and stigmas of a bisexual flower mature at the same time is known as:
291 - The condition in which the anthers and stigmas of a bisexual flower mature at the same time is known as:
Homogamy
292 - The condition in which the pollen of a flower has no fertilizing effect on the stigma of the same flower is called:
292 - The condition in which the pollen of a flower has no fertilizing effect on the stigma of the same flower is called:
Self-sterility
293 - The definitive nucleus on fertilization gives:
293 - The definitive nucleus on fertilization gives:
Oospore
294 - The diffusion of water through a differentially permeable membrane is called:
294 - The diffusion of water through a differentially permeable membrane is called:
Osmosis
295 - The DNA is made up of the following four bases:
295 - The DNA is made up of the following four bases:
A.T.G.C.
296 - The edible part of the apple is:
296 - The edible part of the apple is:
Fleshy thalamus
297 - The effect of the genotype of the pollen grain on the phenotype of the seed is termed as:
297 - The effect of the genotype of the pollen grain on the phenotype of the seed is termed as:
Xenia
298 - The embroid (formed by vegetative cell) develops into a plant, which, in fact, grows out of anther as in:
298 - The embroid (formed by vegetative cell) develops into a plant, which, in fact, grows out of anther as in:
Tobacco
299 - The evolutionary history of a species is referred as:
299 - The evolutionary history of a species is referred as:
Phylogeny
300 - The factor that determine the movement of solutes through a membrane is:
300 - The factor that determine the movement of solutes through a membrane is:
All the above
301 - The fibrous fruit of coconut is dispersed by:
301 - The fibrous fruit of coconut is dispersed by:
Water Potential
302 - The first easily observed sign of a water deficit in a plant is decrease in the tugor of its:
302 - The first easily observed sign of a water deficit in a plant is decrease in the tugor of its:
Leaf cells
303 - The first generation progeny of a hybrid are called:
303 - The first generation progeny of a hybrid are called:
Segregates
304 - The first inbreeding experiments with maize were those reported by:
304 - The first inbreeding experiments with maize were those reported by:
Darwin in 1876
305 - The flattened, lateral, outgrowth of the stem or the branch, developing exogenously from a node and having a bud in its axil as known as:
305 - The flattened, lateral, outgrowth of the stem or the branch, developing exogenously from a node and having a bud in its axil as known as:
Leaf
306 - The fleshy edible part of the mango fruit is:
306 - The fleshy edible part of the mango fruit is:
Mesocarp
307 - The fleshy food storage tissue, lying immediately with in perisperm is called:
307 - The fleshy food storage tissue, lying immediately with in perisperm is called:
Endosperm
308 - The following character in human beings can explain the sex linked inheritance:
308 - The following character in human beings can explain the sex linked inheritance:
Haemophilia
309 - The following organelles also contain DNA:
309 - The following organelles also contain DNA:
Chloroplast
310 - The following part of the chromosome is responsible for the movement of chromosome/chromatid to different poles:
310 - The following part of the chromosome is responsible for the movement of chromosome/chromatid to different poles:
Centromere
311 - The fruit of Acacia is:
311 - The fruit of Acacia is:
Lomentum
312 - The fruit of cumin or coriander is known as:
312 - The fruit of cumin or coriander is known as:
Cremocarp
313 - The fruits of cucurbitaceae is:
313 - The fruits of cucurbitaceae is:
Pepo
314 - The fusion of a male gamete with two polar nuclei is often termed:
314 - The fusion of a male gamete with two polar nuclei is often termed:
Triple fusion
315 - The genes that intensify or diminish the effect of major genes are known as factors:
315 - The genes that intensify or diminish the effect of major genes are known as factors:
Modifying
316 - The green expanded part of leaf is called as:
316 - The green expanded part of leaf is called as:
Leaf blade or lamina
317 - The group of plants, which bear flowers and seeds, are known as:
317 - The group of plants, which bear flowers and seeds, are known as:
Phanerogams
318 - The haploid phase in plants is called :
318 - The haploid phase in plants is called :
Gametophyte
319 - The hydrophytes float on water because of the presence of:
319 - The hydrophytes float on water because of the presence of:
Aerenchyma
320 - The inflorescence of banana is known as:
320 - The inflorescence of banana is known as:
Spadix
321 - The initial gene pool of a synthetic population is composed of:
321 - The initial gene pool of a synthetic population is composed of:
Inbred lines
322 - The initial pool of a composite population is composed of:
322 - The initial pool of a composite population is composed of:
Inbred lines
323 - The jointed stem with solid nodes and hollow internodes is called:
323 - The jointed stem with solid nodes and hollow internodes is called:
Culm
324 - The life first originated in:
324 - The life first originated in:
Water
325 - The life-cycle of an angiosperm is consist of:
325 - The life-cycle of an angiosperm is consist of:
Both stages
326 - The main body of ovule is called:
326 - The main body of ovule is called:
Nucellus
327 - The main patterns concerning origin and domestication of cultivated plant species are:
327 - The main patterns concerning origin and domestication of cultivated plant species are:
All of these
328 - The main reason for the classification of plants is:
328 - The main reason for the classification of plants is:
The difficulties arising in the study of plants because of their large number
329 - The main type of endosperm development is:
329 - The main type of endosperm development is:
Both (a) & (b)
330 - The majority of halophytes show:
330 - The majority of halophytes show:
Xeromorphic caracter
331 - The male sterile line is a cross to produce hybrid seed is known as:
331 - The male sterile line is a cross to produce hybrid seed is known as:
A line
332 - The mechanism of male sterility in self-pollinated crops can be successfully utilised to obtain:
332 - The mechanism of male sterility in self-pollinated crops can be successfully utilised to obtain:
Hybrid seed without emasculation
333 - The mendel's laws of inheritance were rediscovered in 1900 by:
333 - The mendel's laws of inheritance were rediscovered in 1900 by:
Correns, de Varies and Tschermak
334 - The minute scaly outgrowths borne at the upper end of the leaf sheath, as in Gramineae are called:
334 - The minute scaly outgrowths borne at the upper end of the leaf sheath, as in Gramineae are called:
Ligule
335 - The mode of arrangement of ovules in the cavity of ovary is known as:
335 - The mode of arrangement of ovules in the cavity of ovary is known as:
Placenatation
336 - The necleus of the functional megaspore divides:
336 - The necleus of the functional megaspore divides:
Mitotically
337 - The net movement of a substance from an area of its own high concentration into another area of lesser concentration as rsult of kinetic energy of molecules is called:
337 - The net movement of a substance from an area of its own high concentration into another area of lesser concentration as rsult of kinetic energy of molecules is called:
Diffusion
338 - The normal eye colour in Drosphila is red. But mutants occur having white eye and also different shades ranging between white and red which are all recessive to red, while white colour is recessive to all others. This phenomenon is due to:
338 - The normal eye colour in Drosphila is red. But mutants occur having white eye and also different shades ranging between white and red which are all recessive to red, while white colour is recessive to all others. This phenomenon is due to:
Pseudodominance
339 - The nucleus of the cell was first discovered by:
339 - The nucleus of the cell was first discovered by:
Robert Brown
340 - The number of chromosome in common wheat is:
340 - The number of chromosome in common wheat is:
42
341 - The number of stamens is indefinite in:
341 - The number of stamens is indefinite in:
Malvaceae
342 - The nutritive tissue, which is infact, a remnant of the nucleus to called:
342 - The nutritive tissue, which is infact, a remnant of the nucleus to called:
Perisperm
343 - The only force responsible for the movement of water through a membrane is:
343 - The only force responsible for the movement of water through a membrane is:
All the above
344 - The ovary of family liliaceae is:
344 - The ovary of family liliaceae is:
Trilocular superior with axile placentation
345 - The particles of hemicolloides have size (diameter) round about:
345 - The particles of hemicolloides have size (diameter) round about:
1 mu
346 - The phenomenon is called misogamy, when the tube enters into the embryo sac through:
346 - The phenomenon is called misogamy, when the tube enters into the embryo sac through:
Integuments
347 - The physical basis of heredity is termed as:
347 - The physical basis of heredity is termed as:
Gene pool
348 - The place on the stem or branch where one or more leaves arise is known as:
348 - The place on the stem or branch where one or more leaves arise is known as:
Node
349 - The placentation is mustard is:
349 - The placentation is mustard is:
Parietal
350 - The plant that grow in very dry places and can withstand a prolonged period of drought uninjured are:
350 - The plant that grow in very dry places and can withstand a prolonged period of drought uninjured are:
Xerophytes
351 - The plant, which is growing in saline soils or saline water with preponderance of soil in it, is said:
351 - The plant, which is growing in saline soils or saline water with preponderance of soil in it, is said:
Halophytes
352 - The plants, which grow in water deserts, are called:
352 - The plants, which grow in water deserts, are called:
Xerophytes
353 - The plants, which grow in water or in very wet places, are
353 - The plants, which grow in water or in very wet places, are
Hydrophytes
354 - The plants, which occur in moist shady places in forests or in the moist soil near waterlogged localities are:
354 - The plants, which occur in moist shady places in forests or in the moist soil near waterlogged localities are:
Hydrophyte
355 - The plasma membrane is:
355 - The plasma membrane is:
Semi-permeable
356 - The point of attachment of the body of the ovule is its funicle is known as:
356 - The point of attachment of the body of the ovule is its funicle is known as:
Hilum
357 - The pollen along with pollen tube is known as:
357 - The pollen along with pollen tube is known as:
Male gametophyte
358 - The pressure responsible for pushing the membrane against the cell wall is termed as:
358 - The pressure responsible for pushing the membrane against the cell wall is termed as:
Turgor pressure
359 - The process of formation of eggs in animals is called:
359 - The process of formation of eggs in animals is called:
Oogenesis
360 - The process of formation of sperms in animals is known as:
360 - The process of formation of sperms in animals is known as:
Spermatogenesis
361 - The process of guttation is due to:
361 - The process of guttation is due to:
Root Pressure
362 - The process of making the expression of a non-allelic gene by another gene or gene pair is known as:
362 - The process of making the expression of a non-allelic gene by another gene or gene pair is known as:
Epistasis
363 - The process of megasporogenesis occurs in:
363 - The process of megasporogenesis occurs in:
Ovule
364 - The process, double fertilization was first discovered by:
364 - The process, double fertilization was first discovered by:
Nawaschin
365 - The production of double cross hybrid in maize was first suggested by:
365 - The production of double cross hybrid in maize was first suggested by:
Sporogenesis
366 - The production of double cross hybrid in maize was first suggested by:
366 - The production of double cross hybrid in maize was first suggested by:
Jones
367 - The production of sperms is known as:
367 - The production of sperms is known as:
Microgametogenesis
368 - The proportion of one allele as represented in a breeding population is known as:
368 - The proportion of one allele as represented in a breeding population is known as:
Gene frequency
369 - The provision of light of shorten wavelength at the same time as longer red wavellength _______ photosynthesis:
369 - The provision of light of shorten wavelength at the same time as longer red wavellength _______ photosynthesis:
Enhances
370 - The raw materials required for photosynthesis in vascular plants are:
370 - The raw materials required for photosynthesis in vascular plants are:
CO2, water, mineral salts and chlorophyll
371 - The removal of apical buds and young leaves ______ branching.
371 - The removal of apical buds and young leaves ______ branching.
Increases
372 - The replication of DNA is:
372 - The replication of DNA is:
Semi-conservative
373 - The science dealing with variation and heredity is called:
373 - The science dealing with variation and heredity is called:
Genetics
374 - The science, which deals with the study of interrelationship between the living organisms and the various factors of the environment surrounding them as:
374 - The science, which deals with the study of interrelationship between the living organisms and the various factors of the environment surrounding them as:
Ecology
375 - The scientific name of bread wheat is:
375 - The scientific name of bread wheat is:
T. aestivum
376 - The scientific name of maize is:
376 - The scientific name of maize is:
Zea mays
377 - The seeded fruit of rice or maize grain is called:
377 - The seeded fruit of rice or maize grain is called:
Caryopsis
378 - The segregation of individuals in the F2 or in a later generation of a cross, which shows a more extreme development of a character than either parent is termed as:
378 - The segregation of individuals in the F2 or in a later generation of a cross, which shows a more extreme development of a character than either parent is termed as:
Transgressive segregates
379 - The series of changes in the vegetation of a pond, lake, marsh or a stream are together known as:
379 - The series of changes in the vegetation of a pond, lake, marsh or a stream are together known as:
Hydrosere
380 - The series of changes in the vegetation of bare rocky beds, rocky hill slopes sand beds into, extreme scarcity of water are together known as:
380 - The series of changes in the vegetation of bare rocky beds, rocky hill slopes sand beds into, extreme scarcity of water are together known as:
Xerosere
381 - The situation where an egg cell is developed into an embryo' without fertilization, is described as:
381 - The situation where an egg cell is developed into an embryo' without fertilization, is described as:
Parthenogenesis
382 - The slender stalk by which ovule is attached to the placenta is known as:
382 - The slender stalk by which ovule is attached to the placenta is known as:
Funicle
383 - The stage of prophase occur in:
383 - The stage of prophase occur in:
Meiosis
384 - The staminate ______ plants out yield pistillate plants by about 25 per cent.
384 - The staminate ______ plants out yield pistillate plants by about 25 per cent.
Asparagus
385 - The structure of chromosome can best be observed during:
385 - The structure of chromosome can best be observed during:
Metaphase
386 - The study of ecology from the standpoint of individual species is called:
386 - The study of ecology from the standpoint of individual species is called:
Autecology
387 - The sugar found in DNA is:
387 - The sugar found in DNA is:
Deoxyribose
388 - The surface tension in any liquid is ______ related to the temperature:
388 - The surface tension in any liquid is ______ related to the temperature:
Universally
389 - The tap root system is normally meant to:
389 - The tap root system is normally meant to:
All of the above
390 - The term epistasis was originally used by _____ in 1909 to describe genes whose effects mark or cover the effects of other genes:
390 - The term epistasis was originally used by _____ in 1909 to describe genes whose effects mark or cover the effects of other genes:
Bateson
391 - The term genetics was coined by:
391 - The term genetics was coined by:
Bateson
392 - The term heterosis was first used by:
392 - The term heterosis was first used by:
Shull
393 - The term used in sugarcane breeding to denote the crossing of Sacharum officinarum with related species followed by one or more back crosses is called:
393 - The term used in sugarcane breeding to denote the crossing of Sacharum officinarum with related species followed by one or more back crosses is called:
Nobilisation
394 - The theory explaining the cause of variation and evolution, (Continuity of Gemplasm) was put forward by:
394 - The theory explaining the cause of variation and evolution, (Continuity of Gemplasm) was put forward by:
Weismann
395 - The theory of catastrophism was introduced by:
395 - The theory of catastrophism was introduced by:
Cuvier
396 - The theory of genes in the chromosomes was introduced by:
396 - The theory of genes in the chromosomes was introduced by:
Morgan
397 - The theory of 'Natural Selection' was put forward in:
397 - The theory of 'Natural Selection' was put forward in:
1859
398 - The topographic factors include:
398 - The topographic factors include:
All the above
399 - The total volume of water on melting:
399 - The total volume of water on melting:
Increases
400 - The transference of pollengrain from the anther of a flower to the stigma of the same flower is known as:
400 - The transference of pollengrain from the anther of a flower to the stigma of the same flower is known as:
Self-polliniltion
401 - The transference of pollengrains from the anther to the stigma is called:
401 - The transference of pollengrains from the anther to the stigma is called:
Pollination
402 - The usefulness of cortisome for medicinal purposes led to the identification of _____ a potentially rich source of it:
402 - The usefulness of cortisome for medicinal purposes led to the identification of _____ a potentially rich source of it:
Discorea
403 - The various modes in which the leaves are arranged on the stem or the branch, the term is called:
403 - The various modes in which the leaves are arranged on the stem or the branch, the term is called:
Phyllotaxy
404 - The water potential of pure water is equal to:
404 - The water potential of pure water is equal to:
Zero
405 - Theory of 'Acquired characters' was proposed by:
405 - Theory of 'Acquired characters' was proposed by:
Lamark
406 - Theory of Natural Selection was based on:
406 - Theory of Natural Selection was based on:
All the above
407 - Theory of overdominance states:
407 - Theory of overdominance states:
Hetrozygote is superior to both the homozygote
408 - Theory of 'Pangenesis' was given by:
408 - Theory of 'Pangenesis' was given by:
Charles Darwin
409 - There are four stage of development of Genetics upto 20th century. The correct order of their occurrence is:
409 - There are four stage of development of Genetics upto 20th century. The correct order of their occurrence is:
Lamarckism, Weismannism, Darwinism, Mendelism
410 - Thick and woody perennial climbers, met within forests, twine round tall trees and at their tops produce a canopy of foliage are:
410 - Thick and woody perennial climbers, met within forests, twine round tall trees and at their tops produce a canopy of foliage are:
Lianes
411 - Thomas Andrew Knight first noted differences among wheat varieties in their resistance to:
411 - Thomas Andrew Knight first noted differences among wheat varieties in their resistance to:
Rust
412 - To produce hybrid seed we need:
412 - To produce hybrid seed we need:
A male sterile line, restorer, maintainer
413 - Tomato fruit is a:
413 - Tomato fruit is a:
Berry
414 - Transfer of resistance gene to high yielding self-pollinated varieties is achieved by:
414 - Transfer of resistance gene to high yielding self-pollinated varieties is achieved by:
Recurrent backcrossing and selection
415 - Transmission of a gene in Bacterio-phase is known as:
415 - Transmission of a gene in Bacterio-phase is known as:
Transduction
416 - Transmission of characteristics and qualities of parents of their offspring is known as:
416 - Transmission of characteristics and qualities of parents of their offspring is known as:
Heredity
417 - Triticale is a cross between:
417 - Triticale is a cross between:
Wheat & rye
418 - tropical Evergreen or Rain Forests occur in areas with annual rainfall:
418 - tropical Evergreen or Rain Forests occur in areas with annual rainfall:
Exceeding 2,000 mm
419 - Umbel inflorescence is characteristic of the family:
419 - Umbel inflorescence is characteristic of the family:
Coriander family
420 - Unisexual flowers bear:
420 - Unisexual flowers bear:
Either stamens or carpals
421 - Veticillaster inflorescence is characteristic of family:
421 - Veticillaster inflorescence is characteristic of family:
Habiateae
422 - Vilmorin Principle of progeny testing stimulated _____ to devise Ear-to-Row Method of maize breeding in 1886:
422 - Vilmorin Principle of progeny testing stimulated _____ to devise Ear-to-Row Method of maize breeding in 1886:
C.G.Hopkins
423 - Vivipary means:
423 - Vivipary means:
Seed germinates inside the fruit while it is still on the parent tree
424 - Water potential concept was formulated by:
424 - Water potential concept was formulated by:
Otto Renner, 1915
425 - Wheat crop is:
425 - Wheat crop is:
Self pollinated
426 - When a cluster of leaves arises from the short underground item as in pineapple, such leaves are said to be:
426 - When a cluster of leaves arises from the short underground item as in pineapple, such leaves are said to be:
Radical
427 - When a formation is dominated by one or more species which are abundant in it, is said to be:
427 - When a formation is dominated by one or more species which are abundant in it, is said to be:
Climax
428 - When a group of phenotypically similar appearing plant is selected and harvested and their seeds are bulked, the process is known as:
428 - When a group of phenotypically similar appearing plant is selected and harvested and their seeds are bulked, the process is known as:
Mass selection
429 - When a plant heterozygous for two given characters Tt Rr, both of them are completely dominant, is self-pollinated, the resulting progeny will consist of:
429 - When a plant heterozygous for two given characters Tt Rr, both of them are completely dominant, is self-pollinated, the resulting progeny will consist of:
Four phenotypes
430 - When an F1 is crossed with the recessive homozygote parent the cross is known as:
430 - When an F1 is crossed with the recessive homozygote parent the cross is known as:
Test cross
431 - When an individual is having both the alleles of contrasting characters, it is said to be:
431 - When an individual is having both the alleles of contrasting characters, it is said to be:
Heterozygous
432 - When biological processes are made to occur outside the organism in test tube or vessel it is known as:
432 - When biological processes are made to occur outside the organism in test tube or vessel it is known as:
In vitro
433 - When breaks occur in two chromosomes simultaneously in a nucleus and the broken chromosomes rejoin in a new manner, it results in:
433 - When breaks occur in two chromosomes simultaneously in a nucleus and the broken chromosomes rejoin in a new manner, it results in:
Translocation
434 - When homologous chromosomes fail to pair in prophase of meiosis, the phenomenon is known as:
434 - When homologous chromosomes fail to pair in prophase of meiosis, the phenomenon is known as:
Asynapsis
435 - When leaf fall of soon after it appears, then it is said to be:
435 - When leaf fall of soon after it appears, then it is said to be:
Caduceus
436 - When only one fruit develops from the single ovary of a flower it is said to be a:
436 - When only one fruit develops from the single ovary of a flower it is said to be a:
Simple fruit
437 - When stamens are united with the carpals, stamens are said to be:
437 - When stamens are united with the carpals, stamens are said to be:
Gynandrous
438 - When the anthers are united into a bundle or tube but the filaments are free, the stamens are said to be:
438 - When the anthers are united into a bundle or tube but the filaments are free, the stamens are said to be:
Syngenesious
439 - When the flower can be divided in two equal halves by any plane, it is called:
439 - When the flower can be divided in two equal halves by any plane, it is called:
Actinomorphic
440 - When the leaf is flat, with the blade placed horizontally showing a distinct upper surface and a lower surface, as in most dicotyledonous, it is said to be:
440 - When the leaf is flat, with the blade placed horizontally showing a distinct upper surface and a lower surface, as in most dicotyledonous, it is said to be:
Dorsoventral leaf
441 - When the leaf is kidney shaped it is known as:
441 - When the leaf is kidney shaped it is known as:
Reniform
442 - When the leaf surface is smooth and free from hairs or outgrowth of any kind, it is said to be:
442 - When the leaf surface is smooth and free from hairs or outgrowth of any kind, it is said to be:
Glabrous
443 - When the lobes of the base of the leaf partially enclose stem, the leaf is said to be:
443 - When the lobes of the base of the leaf partially enclose stem, the leaf is said to be:
Auriculate
444 - When the male gametes are shed into embryo sac through microphyle, is called:
444 - When the male gametes are shed into embryo sac through microphyle, is called:
Porogamy
445 - When the ovary is one chambered and the placentae bearing the ovules develop on the inner wall of the ovary, then the placentation is known as:
445 - When the ovary is one chambered and the placentae bearing the ovules develop on the inner wall of the ovary, then the placentation is known as:
Parietal
446 - When the ovule bends along the funicle that the microphyle lays close to the hilum, the ovule is said to be:
446 - When the ovule bends along the funicle that the microphyle lays close to the hilum, the ovule is said to be:
Anatropous
447 - When the ovule is bent round like a horseshoe it is said to be:
447 - When the ovule is bent round like a horseshoe it is said to be:
Amphilotropous
448 - When the pistil has all the carpals united together it is said to be:
448 - When the pistil has all the carpals united together it is said to be:
Syncarpous
449 - When the stamens are united throughout their whole length by both the filaments and the anthers, they are said to be:
449 - When the stamens are united throughout their whole length by both the filaments and the anthers, they are said to be:
Synadrous stamens
450 - When two alleles of a gene are identical, the plant is said to be:
450 - When two alleles of a gene are identical, the plant is said to be:
Homozygous
451 - When two genes show independent segregation, a genotype AaBb will produce ______ types of gametes:
451 - When two genes show independent segregation, a genotype AaBb will produce ______ types of gametes:
4
452 - When two organisms live together for mutual help to each other are called:
452 - When two organisms live together for mutual help to each other are called:
Symbionts
453 - When we place a living plant cell in a solution with an osmotic potential identical to that of its own cell sap the solution is:
453 - When we place a living plant cell in a solution with an osmotic potential identical to that of its own cell sap the solution is:
Isotonic
454 - Which is a common method used in cross-pollinated crops?
454 - Which is a common method used in cross-pollinated crops?
Pedigree method
455 - Which is the dioecious plant?
455 - Which is the dioecious plant?
Vallisneria
456 - Which is the monoecious plant?
456 - Which is the monoecious plant?
Maize
457 - Which of the following breeding procedures are not used for producing new varieties of self-pollined crop?
457 - Which of the following breeding procedures are not used for producing new varieties of self-pollined crop?
Mass selection
458 - Which of the following ions is involved in the opening and closing of stomata?
458 - Which of the following ions is involved in the opening and closing of stomata?
K+
459 - Which of the following is not xerophytic plant?
459 - Which of the following is not xerophytic plant?
Mango
460 - Which of the following is ploidy level of common wheat?
460 - Which of the following is ploidy level of common wheat?
Hexaploid
461 - Which of the following is sub-aerial modification of stem?
461 - Which of the following is sub-aerial modification of stem?
Stolon
462 - Which of the following leads to the cross-pollination?
462 - Which of the following leads to the cross-pollination?
All the above
463 - Which of the following material makes the protein chain?
463 - Which of the following material makes the protein chain?
Aminoacids
464 - Which of the following scientists is called the father of genetics?
464 - Which of the following scientists is called the father of genetics?
Gregor Mendel
465 - Which of the following type(s) of male sterility is/are used in commercial seed production of double cross hybrid maize?
465 - Which of the following type(s) of male sterility is/are used in commercial seed production of double cross hybrid maize?
Cytoplasmic and genetic with restors
466 - Which of the fruit is capsule?
466 - Which of the fruit is capsule?
Cotton
467 - Which one f the following is not dioecious plant?
467 - Which one f the following is not dioecious plant?
Maize
468 - Which one of the following categories of seeds is the farmer expected to buy afresh every time?
468 - Which one of the following categories of seeds is the farmer expected to buy afresh every time?
Hybrid
469 - Which one of the following chemicals is used to induce polyploidy?
469 - Which one of the following chemicals is used to induce polyploidy?
Colchicines
470 - Which one of the following is the site of protein synthesis?
470 - Which one of the following is the site of protein synthesis?
Ribosomes
471 - Which sterility is exploited in hybrid seed production?
471 - Which sterility is exploited in hybrid seed production?
Cytoplasmic genetic male sterility is found
472 - Who established that character is transmitted from generation to generation through chromosomes?
472 - Who established that character is transmitted from generation to generation through chromosomes?
Strasburger and Hertwig
473 - Who founded the cell theory?
473 - Who founded the cell theory?
Schwann and Schleiden
474 - Who invented first compound microscope?
474 - Who invented first compound microscope?
Jansen
475 - Who is credited with the discovery of mitosis?
475 - Who is credited with the discovery of mitosis?
Flemming
476 - Who is regarded as the father of botany?
476 - Who is regarded as the father of botany?
Theofrastus
477 - Who suggested the imbiitions theory of ascent of sap?
477 - Who suggested the imbiitions theory of ascent of sap?
Sachs
478 - Wind pollination is also known as:
478 - Wind pollination is also known as:
Anemophyly
479 - With the increase in temperature, the solubility of solid in a liquid:
479 - With the increase in temperature, the solubility of solid in a liquid:
Increases
480 - Zamikand and Taro (Colocasia) are example of:
480 - Zamikand and Taro (Colocasia) are example of:
Corm
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