Campbell Biology (10th Edition)

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

Chapter 10 - 10.2 - Concept Check: 1

Answer

Green light, because it is not absorbed by the photosynthetic apparatus and, so, cannot power

Work Step by Step

Please see Fig. 10.10, which shows the wavelengths of light which can power photosynthesis. Note that there is a valley (non-absorption) in the green wavelengths and for some, but not all, yellow. If light is not absorbed, its energy cannot power photosynthesis. Consider that the color we see is the wavelength most reflected by the pigment and least likely to be absorbed.
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