Question

Assertion (A) Aves must feed more often than reptiles.
Reason (R) Birds are homeotherms and this consumes more energy than reptiles that are poikilotherms.

• A. If both A and R are true and R is the correct explanation of A
• B. If both A and R are true, but R is not the correct explanation of A
• C. If A is true, but R is false
• D. If A is false, but R is true

Answer 1

Answer: (A)

Both the Assertion and Reason are true and Reason is the correct explanation for Assertion.
Aves feed more often than reptiles because Aves are endothermic (homeotherms) and need to produce heat through various metabolic activities in order to constantly maintain body temperature. Whereas amphibians are poikilotherms thus do need more energy because their body temperature changes with respect to surrounding.