Campbell Biology (11th Edition)

Published by Pearson
ISBN 10: 0-13409-341-0
ISBN 13: 978-0-13409-341-3

Chapter 10 - 10.4 - Concept Check - Page 206: 2


PSII produces oxygen, which can be used by rubisco for photorespiration. That in turn reduces photosynthetic efficiency and output, so by moving PSII away from rubisco, $C_{4}$ plants become more photosynthetically efficient.

Work Step by Step

This question is asking you to make a connection between the light reactions and the Calvin cycle, specifically with reference to photorespiration. This explains the placement of PSII in $C_{4}$ plants as they try to make rubisco/photosynthesis more efficient.
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