Answer
c.
Work Step by Step
Adult echinoderms generally display five-part radial symmetry. Echinoderms include organisms such as sea urchins, sea stars, and sand dollars.
Biology 2010 Student Edition
by Miller, Kenneth R.; Levine, Joseph S.
Published by
Prentice Hall
ISBN 10:
9780133669510
ISBN 13:
978-0-13366-951-0
Chapter 26, Animal Evolution and Diversity - Assessment - 26.1 Invertebrate Evolution and Diversity - Understand Key Concepts/Think Critically - Page 776: 3
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