1 - A new species is formed when:
Genotypic changes accumulated in a population which result in its reproductive isolation
2 - According to the ""Theory of Continuity of Germplasm"" which was put forward by August Weismann:
The acquired character of organism which have passed only to germplasm are inherited in their offsprings
3 - According to Weismann theory which of the following facts will be correct:
Germplasm continues generation after generation as impartial matter whereas somaplasm only functions to house the germplasm
4 - Adaptation of a species is its:
Acquired characters
5 - Best suited examples given in favour of Lamarckian Theory are:
Both (a) & (b)
6 - By illustrating the examples of African giraffe and snakes Lamarck emphasized mainly that:
Development and efficiency of body organs are an proportion to their use and disuse
7 - Cause of struggle for existence among animals is:
Due to all of these reasons
8 - Currently ""Evolution"" and ""Natural Selection"" are regarded as natural phenomena. ""Principles of Genetics"" applied to ""Population Dynamics"" have removed the drawbacks of Darwin's Theory as a result ""neo Darwinism"" has emerged out as ""Modern Synthetic Theory of Organic Evolution"". The theory was designated to explain organic evolution by:
Huxley
9 - Darwin did not have much idea of mutations but he used a word to denote them which was:
Sports
10 - Darwinism can be explained briefly by a chart consisting of observed facts and deductions which was drawn jointly by:
Darwin and Wallace
11 - Darwin's finches are found in:
Galapago Islands
12 - De Vries Theory of Organic Evolution is longer accepted because of one of the lowing criticisms:
All of these
13 - Discontinuous Variations"" may be defined as:
Mutations
14 - For evolution, the most important requirement is:
Natural selection
15 - Frequency of a mutant gene in a population is expected to increase if that gene is:
Dominant
16 - From the experiments upon mice by cutting the tails of new-born mice for more than twenty generations and yet no hereditary effect, Weismann could conclude:
Theory of continuity of germplasm""
17 - From the observed fact namely ""Enormous fertility yet number is constant"". Darwin and Wallace could make out some conclusion which is:
Struggle for existence
18 - Greatest blow to Lararckism came from the work of:
August Weismann
19 - Greatest drawback of Darwin's Theory was that it could not offer suitable explanation for:
Variations
20 - Hugo De Vries pioneered the theory of mutations to explain the mechanism of organic evolution. The material on which he performed experiments was:
Oenothera Lamarckiana
21 - Hugo De Vries while working on plants Oenothera Lamarchiana developed his famous theory of:
Mutations
22 - If a population of organisms is introduced into a new territory where environmental conditions are favourable to it, the population grows rapidly because of:
More survival of offsprings
23 - In formulating his theory of organic evolution by ""Natural Selection"", Darwin was greatly influenced by the writings of:
Malthus
24 - In which of the following books, Darwin published his theory:
On the origin of species by Natural Selection""
25 - Increase in the length of neck and fore legs in African giraffe was explained by Lamarck due to the fact that ancient giraffes stretched their neck and fore legs generation after generation and the character acquired as a result of use was inherited. Darwin also explained the phenomenon. Can you point out the way in which Darwin described it:
Only those members which had longer necks and fore legs were selected by nature
26 - Initial material to ""Medern Synthetic Theory of Organic Evolution"" was provided by Dobzhansky's book entitled:
Genetics and Origin of Species""
27 - Key point of Lararck's Theory was:
Inheritance of acquired characters
28 - Lamarck was a ""French Naturalist"" who proposed:
Theory of inheritance of acquired characters
29 - Lamarckism envisages that the:
Organisms inherit the characters acquired by their parents
30 - Lamarck's ""Theory of Organic Evolution"" is based upon:
All of these
31 - Lamarck's theory of organic evolution cannot give best explanation for one of the following:
Only those which are fittest can survive and are selected by the nature
32 - Lamarck's theory of organic evolution was published in the book entitled:
Philosophic Zoologique
33 - Mutations are due to:
Abrupt changes in genes
34 - Mutations are generally:
Harmful
35 - Mutations are mainly respobsible for:
Variations in the organism
36 - Mutations are:
Heritable changes
37 - Neck and fore limbs in African giraffe increased in length as a result of:
Use and disuse
38 - Neolamarckism"" states that:
All the beritable characters are carried by 'genes' which become incorporated in the genotype and are heritable
39 - New species evolve by sudden and distinct heritable changes called mutations and not by ""Natural Selection"". The idea was put forward by:
De Vries
40 - Oenothera Lamarckiana the plant which was used by De Vries is commonly called:
Evening primrose
41 - One major criticism against Darwin's Theory on evolution is:
That it does not take into account the variations with heredity in the organisms
42 - One of the criticism to Darwinism was that it could not give satisfactory explanation for one of the following points:
Excessive overgrowth of useful structures bringing extinctions rather than evolution
43 - One of the evolutionary concept in Biology was projected by Darwin in his book ""Origin of Species"". It has been discussed as:
Theory of Natural Selection leading to Survival of Fittest
44 - One of the objectives of experiments in plant breeding is to produce new varieties which have special properties (like high yield, resistance to certain diseases etc.). The method envolves production of mutants in laboratory and then subject them to particular type of solution needed. Which of the following treatments would be more effective:
Irradiating the seeds with X-rays
45 - Organic variations occur ultimately through:
Mutation
46 - Ship on which Darwin travelled was:
Beagle
47 - Sudden heritable changes are called:
Mutations
48 - The animals of colder countries have small ears, short tail and limbs to avoid more loss of heat"" is the theme of:
Allen's law
49 - The book ""Origin of Species"" was published in the year:
1859
50 - The book ""Philosophie Zoologique"" written by Jean Baptist de Lamarck was published in the year:
1809
51 - The evolution of a species can be considered as the sum total of adoptive changes of species preserved by:
Natural selection
52 - The idea ""Survival of Fittest"" propounded by Darwin as given by Herbert Spencer (1820-1903). Is this statement:
Partially wrong
53 - The idea of ""Survival of fittest"" was first presented by:
Spencer
54 - The processes associated with evolution of a species collectively mean:
Natural Selection
55 - The scientist who gave a severe blow to Lamarckian theory by giving ""Theory of continuity of germplasm"" was:
August Weismann
56 - The statement entitled, ""I eat, you eat, he eats, I am eaten, you are eaten and he is eaten"" is indicative of:
Intra-specific struggle for existence in life
57 - The Theory of Natural Selection proposed by Charles Darwin for explaining ""Organic Evolution"" was based on:
Enormous fertility, struggle for existence and survival of fittest
58 - The theory of organic evolution by process of natural selection was proposed by:
Darwin
59 - The ultimate source of organic variations is:
Natural Selection
60 - To be a successful event for evolution the mutation or change must occur in:
Germplasm DNA
61 - Weismann stated that a multicellular body is divisible into somaplasm and germplasm which separate at early embryonic life. Therefore only link between these will be:
Gametes
62 - What could be deduced from Darwin and Wallace's observed fact entitled, ""Survival of the fittest and continuous changes in environment"":
Structural modifications leading to a new species
63 - When a population's large portion is destroyed by some calamity, the new populet from survivers shall have gene pool showing:
Genetic drift
64 - Which is the observed fact in the chart drawn by Darwin and Wallace:
All of these
65 - Which of the following concepts is attributed to Charles Darwin:
In the struggle for existence, the fittest individuals survive
66 - Which of the following concepts is attributed to Lamarck:
Inheritance of acquired characters
67 - Which of the following facts Darwin and Wallace deduced from the observed fact ""Struggle for existence, variations and their transmission"":
Survival of fittest or natural selection
68 - Which of the following facts definitely casts doubt on Lamarckian theory:
Blacksmith's son does not have powerful arm muscles as his father
69 - Which of the following facts does not hold truth with reference to De Vries Theory of organic evolution:
The development and deficiency of organs are in proportion to use and disuse of these organs
70 - Which of the following facts is not correct about Lamarckism in the light of current scientific knowledge:
Both (a) & (b)
71 - Which of the following facts make Lamarckism doubtful:
Indian ladies have been getting their ears pierced since ages but pierced ears are not inherited
72 - Which of the following features are raw materials in evolution according to Darwin's Theory:
Intra-specific character
73 - Which of the following is associated with name of Darwin:
Galapago's islands
74 - Which of the following points have been put forward by the scientists for criticism of Darwin's theory:
All of these
75 - Which of the following Scientists contributed a lot to ""Modern Synthetic Theory of Organic Evolution"".
All of these
76 - Which of the following statements will be wrong in contest of modern concept of evolution:
None of these
77 - Which of the following theories of evolution can best explain the vestigial organs:
Lamarckism
78 - Which of the following was most influential in formulation of ""Theory of Natural Selection"":
Malthus's essay on population
79 - Which one of the following gactors is respobsible for the evolution of organisms according to Neo-Darwinism:
Natural selection
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