NEET Biology question

What causes a green plant exposed to light on only one side to bend toward the source of light as it grows?

(A)Light stimulates plant cells on the lighted side to grow faster
(B)Auxin accumulates on the shaded side, stimulating greater cell elongation thereCorrect
(C)Green plants need light to perform photosynthesis
(D)Green plants seek light because they are phototropic

Answer: (B)

Solution

Unilateral light causes a lateral redistribution of auxin toward the shaded side of the stem, and the resulting higher auxin concentration

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Question ID VK-114370