For the following items, match the extant vertebrate groups with the descriptions.
-Internal fertilization, leathery amniotic egg, and skin that resists drying are characteristics of
A) amphibians.
B) nonbird reptiles.
C) chondrichthyans.
D) mammals.
E) birds.

Question

Quizplus · Accepted Answer

Nonbird reptiles, such as turtles, lizards, and crocodiles, are the only extant group that display internal fertilization, leathery amniotic eggs, and skin that resists drying. Amphibians have jelly-like eggs that require moisture, chondrichthyans (cartilaginous fish) have internal fertilization but lay eggs with a leathery or calcified shell, mammals have internal fertilization and give birth to live young, and birds have hard-shelled amniotic eggs but do not have skin that resists drying.

For the Following Items, Match the Extant Vertebrate Groups with the Descriptions