Plants grow toward the light because:
A. auxin concentration on the shaded side
increases.
B. stem elongation is greater on the side
exposed to the light.
C. gibberellin concentration is greater on the
side exposed to light.
D. cells on the shaded side divide more
rapidly due to the presence of ethylene.
E. photoreceptive statoliths settle to the
bottom of the cells on the shaded side.
A
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