Question

Distinguish between the following:

Class Pisces and Class Reptiles

Answer 1

Feature	Class Pisces (Fishes)	Class Reptiles
Habitat	Found in aquatic habitats (freshwater and marine).	Found in terrestrial habitats, but some live in water (e.g., crocodiles, turtles).
Body Covering	Body covered with scales that are slimy due to mucus secretion.	Body covered with dry, horny scales that prevent water loss.
Respiration	Breathe through gills.	Breathe through lungs.
Heart Structure	Two-chambered heart (except some species with a three-chambered heart).	Mostly three-chambered heart (except crocodiles, which have four chambers).
Reproduction	Mostly oviparous (lay eggs), with external fertilization.	Mostly oviparous, but some are viviparous (give birth to young ones); internal fertilization.
Examples	Rohu, Shark, Stingray, Seahorse	Tortoise, Lizard, Snake