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 40 - Self-Quiz - Page 721: 13



Work Step by Step

Endotherms have higher metabolic rates than ectotherms. In endotherms, body temperature is kept constant whereas in ectotherms, body temperature fluctuates according to the temperature of their environment. To maintain a constant internal body temperature, an endotherm such as a mouse has to use about thirty times more energy than an ectotherm such as a lizard that has the same body weight. To increase their body temperatures, ectotherms must move themselves to a warmer area rather than raising their metabolic rates.
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.