Campbell Biology (10th Edition)

Published by Pearson
ISBN 10: 0321775651
ISBN 13: 978-0-32177-565-8

Chapter 10 - 10.4 - Concept Check: 1

Answer

PSII produces oxygen, which can be used by rubisco for photorespiration. That would limit the efficiency of rubisco, and, thus, of the Calvin cycle. By not having PSII in the bundle sheath, photorespiration is reduced.

Work Step by Step

The key here is to pay attention to oxygen's role in photorespiration. One trick to make photosynthesis more efficient is to keep oxygen away from rubisco, which is the real subject of the question.
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