Assertion :Birds drink very little water and insects never consume. Reason: They are uricotelic with negligible water requirement to eliminate nitrogenous waste.

Both assertion and reason are correct and reason is the correct explanation for assertion.

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Both assertion and reason are correct but reason is not the correct explanation for assertion.

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Assertion is correct but reason is incorrect.

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Both assertion and reason are incorrect.

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Solution

The correct option is A Both assertion and reason are correct and reason is the correct explanation for assertion.
The excretory product in various animals reflects their physiological adaptations for example aquatic animals excrete ammonia. Ammonia is the most toxic form of nitrogenous wastes and requires large amount of water for its elimination, whereas uric acid, being the least toxic, can be removed with a minimum loss of water. Reptiles, birds, land snails and insects excrete nitrogenous wastes as uric acid in the form of pellet or paste with a minimum loss of water and are called uricotelic animals.

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(a) Both assertion and reason are correct and the reason is correct explanation of assertion
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(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
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