A) \[2,\,\,4,\,\,5-T\]
B) \[2,\,\,4-D\]
C) cytokinin
D) \[IAA\]
Correct Answer: D
Solution :
In case of phototropism, unilateral light leads to lateral displacement of growth hormone (which is IAA) on shaded side of the plant, thus causing more growth on the darker side. It results the curvature of the shoot towards the source of light.
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