Question

Distinguish between Reptilia, Amphibia and Aves.

Answer 1

Reptilia	Amphibia	Aves
Members of Reptilia are terrestrial, with few exceptions.	Members of Amphibia live on land as well as in water.	Aves are terrestrial and aquatic.
They are poikilothermic.	They are poikilothermic.	They are homeothermic.
All reptiles have three chambered heart, except for crocodiles.	They have three chambered heart.	They have fourchambered heart.
Olfactory lobes and cerebellum are better developed than those of amphibians.	Olfactory lobes and cerebellum are less developed as compared to reptiles.	Cerebellum is well developed for equilibrium.
Skin is dry, nonglandular and covered by scales and plates.	Skin is moist, glandular with mucous glands.	Skin is thin, dry, non-glandular except oil gland at the base of tail.
Digits bear claws.	Digits do not bear claws.	Digits bear claws.
Exoskeleton bears epidermal scales or scutes, shields or plates.	Exoskeleton is absent.	Exoskeleton is made up of feathers.