Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1-25918-813-2
ISBN 13: 978-1-25918-813-8

Chapter 49 - The Circulatory System - Review Questions - Synthesize: 3


Yes, since we find it convergently in two endothermic groups, mammals and birds. It provides the greater efficiency needed to raise metabolic rates in organisms which set their own internal temperature by metabolic means.

Work Step by Step

See that the four chambered heart arises twice, and in both cases this is in endothermic groups. Further, no group without this kind of heart is endothermic.
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