Question

Compare and contrast the heart in mammals, aves, reptites amphibians, Pisces

Answer 1

Pisces               - 2 chambered heart

Amphibians      - 3 chambered heart

Reptiles.           - 3 chambered heart (except crocodile 4 chambered heart)

Aves                 -  4 chambered heart

Mammals         - 4 chambered heart