Question

How are amphibian, reptilian, and mammalian legs different?

Answer 1

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Q1:Amphibians have a skeletal system that is structurally homologous to other tetrapods, though with a number of variations. They allhave four limbs except for the legless caecilians and a few species of salamander with reduced or no limbs.

Reptiles are tetrapod vertebrates, creatures that either have four limbs or, like snakes, are descended from four-limbed ancestors. Unlike amphibians, reptiles do not have an aquatic larval stage.

Muscles make the legs move. Bones make them strong. On four-legged mammals, the legs are attached underneath the body. The hind legs of mammals resemble the legs of humans.

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