Biology (11th Edition)

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

Chapter 31 - Seed Plants - Review Questions - Apply: 4



Work Step by Step

B. is wrong since cycads lack vessels, and C. is incorrect since a lack of vessels is true of a pterophyte, but also of many other plants and so is insufficient for that identification. D. is wrong, similarly, because some tracheophytes lack vessels, but not all.
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