Biology: The Unity and Diversity of Life (14th Edition)

Published by Brooks/Cole Publishing Co.
ISBN 10: 1305073959
ISBN 13: 978-1-30507-395-1

Chapter 25 - Self-Quiz - Page 433: 9


c. feathers

Work Step by Step

The cloaca is present in amphibians, reptiles, many fish, and some mammals. Both birds and mammals have four-chambered hearts. Some reptiles, birds, dinosaurs, and even mammals have amniote eggs. Only feathers are found uniquely in birds.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.