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

Question

Quizplus · Accepted Answer

Nonbird reptiles are the only group that possesses all four of these features. Internal fertilization and amniotic eggs are also found in mammals and birds, but heavy bones and dry-resistant skin are not unique to these groups. Chondrichthyans have internal fertilization and heavy bones but their skin is not adapted to resist drying. Amphibians have neither internal fertilization nor amniotic eggs, and their skin is not suited to dry environments.

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