Biology (11th Edition)

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

Chapter 42 - The Animal Body and Principles of Regulation - Review Questions - Apply: 1

Answer

B.

Work Step by Step

A. is wrong since it contradicts the correct answer--organs are hierarchically above tissues and below organ systems in the animal body. C. is wrong because all three germ tissues contribute to various organs, and D. can be eliminated since the circulatory system is only one of many systems.
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