Answer
A
Work Step by Step
B. is not in the clam not C. in the octopus. D. is not seen in the clam. Only A. is found in all three organisms mentioned in the question.
Campbell Biology (10th Edition)
by Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Published by
Pearson
ISBN 10:
0321775651
ISBN 13:
978-0-32177-565-8
Chapter 33 - Test Your Understanding - Level 1 - Knowledge/Comprehension - Page 711: 1
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