Homeostasis in Biology topic based MCQs preparation test for all competitive exam. Homeostasis in Biology Chapter# 10, topic based MCQs that are mostly asked in competitive exam related to Biology. Examtry team design a series of MCQs based tests that effectively and efficiently help a student or job seeker to prepare their exam effectively and efficiently.
Examtry team design more than 60 MCQs and try their best to cover the whole topic Homeostasis in Biology . These MCQs based test really helpful in all competitive exams as well as institutional exams. Anyone who wants to pass job test comprising one paper or MCQs based test come on examtry.com and get prepared himself.
MCQs under the topic of Homeostasis in Biology covers all tests conducted by FPSC, NTS, KPSC, PPSC, SPSC, BPSC, OTS, UTS, UPS, PTS, CTS, ATS, ETEA or any other institution.
1 - The mechanism of regulation, generally between organism and its environment, of solutes and the gain and the loss of water is called
Osmoregualtion
2 - In a hot summer after noon, if your body's Homeostatic machinery keep your internal temperature quite lower than that of external than this is an example of
Negative feed back
3 - In osmosis water molecules move from area of _______ to _______ through semipermeable memberane
Lower solute concentration to higher solute concentration
4 - Which of the following represents osmoregulatory steps taken by hydrophytes?
Increases transpiration by increasing the surface area of the leave.
5 - Thick, waxy & leathery cuticle around leaves is present in
Xerophytes
6 - Rose is an example of
Mesophytes
7 - Most of the marine invertebrates are
Osmoconformers
8 - Which of the following fish drink large amount of sea water and excrete concentrated urine resulting in maximum salt excretion and minimal water loss?
Bony fishes
9 - Which of the following marine fishes are considered direct descendents of fresh water ancestors?
Bony fishes
10 - Which of the following fishes excrete large volume of diluted urine?
Fresh water fishes
11 - Terrestrial animals like kangaroo rat survive even without drinking water since
They are anhydrobiotic organisms
12 - The characteristic which enable animals to tolerate dehydration is called
Anhydrobiosis
13 - Which excretory product in produced in plants during autotrophic mode of life?
O2
14 - In plants which of the following is a waste product produced both during photosynthesis and respiration
H2O
15 - Which of the following structure in plant's body is called excretophores?
Leaves
16 - In animals excess of nitrogen is excreted primarily in form of
Ammonia
17 - Purine and pyrimidine catabolism results in production of
Xanthine
18 - Which of the following is most toxic?
Ammonia.
19 - Aquatic animals excrete nitrogenous waste commonly in the form of
Ammonia.
20 - Amount of water required to excrete 1gN of Urea is
50 ml
21 - Which of the following animal excrete nitrogenous waste mainly as uric acid?
Birds.
22 - Hydra has no specialized excretory system because
The whole body cells are in contact with water
23 - Each ach nephridium of earthworm opens to the exterior by
Nephridiopore
24 - The nephridia of earthworm open into the coelom by
Nephrostome
25 - Which of the following openings have cilia?
Nephrostome
26 - The distal blind end of the malpighian tubules bathes freely in
Haemocoel
27 - The main nitrogenous waste formed in the body of earthworm is/are
Urea
28 - Protonephridia are present in
Flateworm
29 - Nephrostome in earthworm opens in
Internal Body cavity
30 - Which of the following excretory structure is associated with gut of the organism?
Malpighian tubules
31 - Malphighian tubules absorb waste materials and salts from
Hemolymph
32 - Which of the following is a segmentally arranged excretory system?
Metanephridium
33 - In Urea cycle ______ ammonia molecules combine with 1 CO2 molecule to form 1 molecule of urea.
2
34 - Excessive lactic acid is converted into ________ by liver.
Glycogen
35 - Each human kidney receives _____ % of total cardiac out put
0.2
36 - Which of the following nephrons play important role in production of concentrated urine?
Juxtramedullary
37 - Which of the vascular channels are related to Juxtramedullary nephrous only?
Vasa recta
38 - Which of the following filtrate contains excessive amount of amino acids, glucose, and salts?
Glomerular filtrate
39 - Which of the following constituent is/are maximum in the filtrate that leaves proximal convoluted tubules
Nitrogenous waste
40 - On which of the following site the posterior pituitary hormone acts predominantly
Collecting tubules
41 - Which of the following kidney stones are most common?
Calcium oxalate
42 - A stone measuring 0.4 cm, blocking the outlet of renal pelvis resulting in mild to moderate tract obstruction. Which of the following technique will be opted to remove this stone
Extracorporeal Shock wave lithotripsy
43 - Which of the following mechanism explains development of anemia in Renal failure?
Failure of proper RBC synthesis, due to lack of chemical stimulation.
44 - Which of the following treatment will be administered first in a newly diagnosed renal failure patient?
Hemodialysis
45 - Formation of heat shock proteins in plants results in
Embracing the enzymes and other proteins and prevent their denaturation.
46 - Which adaptation is acquired by plants of cooler areas to prevent lipid crystal formation in cell membrane?
Increase in proportion of unsaturated fatty acids.
47 - Animals that produce metabolic heat at low level and also absorb heat from the surroundings are called
Heterotherms
48 - Fishes, most of the invertebrates and amphibians are examples of ______ animals
Ectotherms
49 - Bats & humming birds belong to
Heterotherms
50 - Brown fat present in certain mammals is specialized in
Rapid heat production.
51 - Blubber a thick layer of fat is present in
Marine Mammals.
52 - Panting is a representative of which mechanism
Evaporative cooling.
53 - Thermostat of human body is present in
Hypothalamus.
54 - Production of pyrogens is a ________ phenomenon
Protective
55 - Name the type of adaptation from the following that is responsible for shivering thermogenesis
Behavioral.
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