Which feature is shared by crocodile with all mammals?
Laying of eggs by females
Presence of dry scales on the skin
Cold-blooded
Presence of four-chambered heart
Heart of crocodile is ___ chambered.
Which one of the following sets of animals share a four chambered heart?
(a) Amphibian, Reptiles, Birds
(b) Crocodiles, Birds, Mammals
(c) Crocodiles, Lizards, Turtles
(d) Lizards, Mammals, Birds