Question

____________ are poikilotherms.

• A. Aves and reptiles
• B. Aves and amphibians
• C. Fishes and mammals
• D. Amphibians and reptiles

Answer 1

The correct option is D Amphibians and reptiles

Homeotherms are warm-blooded animals. They are able to maintain constant body temperature irrespective of the external temperature.
Aves and mammals are homeotherms.

Fishes, amphibians and reptiles are poikilotherms or cold-blooded animals. They cannot maintain constant body temperature. Their internal temperature varies with the external surroundings.

So, the correct answer is- Amphibians and reptiles.