Question

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Answer 1

The cells on the plant that are farthest from the light have a chemical called auxin that reacts when phototropism occurs. This causes the plant to have elongated cells on the farthest side from the light. Phototropism is one of the many plant tropisms or movements which respond to external stimuli.

Answer 2

Hanjiii......

SAT SHRI AKAL JII.....

Stimulus for phototropism is......

⭐⭐LÎGHT STIMULUS ⭐⭐

hope it helps