Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 25, Introduction to Animals - Assessment - 25.2 Animal Body Plans and Evolution - Understand Key Concepts/Think Critically - Page 747: 20



Work Step by Step

Option b. is incorrect. The endoderm gives rise to the lining of the digestive tract and the respiratory system. Option c. is incorrect. The mesoderm gives rise to muscles and the organs of the circulatory, excretory, and reproductive systems. Option d. is incorrect. The periderm forms the outer woody layer of plants. Option a. is correct. The ectoderm gives rise to the skin, sense organs, and the nerves.
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