NEET Zoology Excretory System MCQ Question
A survey of animal kingdom presents a variety of excretory substances. Select correct option for given sentences:
(i) Kidneys do not play any significant role in removal of ammonia.
(ii) Terrestrial adaptation necessitated the production of lesser toxic nitrogenous wastes.
(iii) Terrestrial animal generally excrete urea and uric acid for conservation of water.
(iv) Mammals, many terrestrial amphibians and marine fishes are called ureotelic animals.
(v) Ammonia produced by metabolism is converted into urea in the liver.
(vi) Reptiles, birds, land snails and insects are called ureotelic animals.
(i), (ii), (v) and (vi) are incorrect
(i), (ii), (iii) and (v) are correct
(iii), (iv) and (vi) are correct
(ii), (iii), (iv) and (v) are correct
Correct Answer
Detailed Explanation
Statements (ii), (iii), (iv), and (v) are correct. Terrestrial adaptation leads to less toxic waste production, terrestrial animals excrete urea and uric acid, mammals and others are ureotelic, and ammonia is converted to urea in the liver. Statement (i) is incorrect as kidneys do play a role in ammonia removal.
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