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← Life Sciences & MedicineIf a plant shoot bends toward light, which consequence follows due to polar auxin transport?
A)Uniform cell growth stimulation
B)Inhibition of stem elongation
C)Decreased proton pump activity
D)Asymmetric cell wall loosening✓
💡 Explanation
Auxin accumulates on the shaded side of the stem due to polar auxin transport, because this increased auxin concentration triggers acid growth by activating proton pumps. Therefore, the shaded side undergoes cell wall loosening and elongation, rather than uniform or inhibited growth.
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