Q. Which of the following groups consists only of poikilothermous (cold-blooded) animals?
A) Amphibians, reptiles and birds
B) Fishes, amphibians and reptiles
C) Fishes, birds and mammals
D) Reptiles, birds and mammals
Explanation
Fishes, amphibians and reptiles cannot regulate body temperature. Birds (Aves) and mammals are homoiothermous (warm-blooded).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.