Biology (11th Edition)

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

Chapter 29 - Protists - Review Questions - Understand: 12

Answer

A.

Work Step by Step

Only A. shows aggregation of cells, unlike B.-D. which all live their lives as single cells, though they might at times be in close proximity with other cells of their kind by simple happenstance.
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