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The movement of shoot towards light is
(a) geotropism
(b) hydrotropism
(c) chemotropism
(d) phototropism

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Answer: D

Solution: Tropism is the growth in response to external stimuli. Geotropism is the growth of roots towards the gravitational force of the earth. Hydrotropism is the growth of shoots towards water. Chemotropism is the growth of shoots towards the chemical stimulus. Phototropism is the growth of shoots towards the direction of the light.

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