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Which option correctly identifies tropism on the basis of stimulus?

Answer and explanation

Correct answer: प्रकाशानुवर्तन में प्रकाश, जलानुवर्तन में जल और रसायनानुवर्तन में रसायन उद्दीपन हैं

The governing concept is tropism, a directional growth response of a plant part to an external stimulus. Phototropism is caused by light, hydrotropism by water, and chemotropism by chemicals, so option A correctly matches each term with its stimulus. Option B swaps the stimuli, option C confuses chemicals with gravity, and option D incorrectly limits all tropisms to touch.

Related tags

TropismPlant ResponseStimulusControl And CoordinationWorld Of LivingScienceClass 10 Mcq

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