The stimulus for phototropic movements is

Light

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Dark

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Water

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Touch

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Solution

The correct option is A Light
Phototropic movement is the movement of plant parts in response to the light. The stimulus for phototropic movement is light. Positive phototropic movement is growth of plant towards the light stimulus. Negative phototropic movement is growth of plant away from the light stimulus.
Thus, the correct answer is option A.

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Similar questions

In tropic movements, plant parts move

(a) away from the stimulus

(b) towards the stimulus

(d) only towards water

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