Answer
B
Work Step by Step
Tracheids have pits on their sides and ends. The pits contain only primary cell walls. Vessel elements are organized so that the holes within the structure lack both primary and secondary cell walls.
Biological Science (6th Edition)
by Freeman, Scott; Quillin, Kim; Allison, Lizabeth; Black, Michael; Taylor, Emily; Podgorski, Greg; Carmichael Jeff
Published by
Benjamin Cummings
ISBN 10:
0321976495
ISBN 13:
978-0-32197-649-9
Chapter 34 - Plant Form and Function - Review - Page 726: 2
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