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Question
Plant bends towards the source of light on account of the movement of curvature known as
Options:
A .  geotropism
B .  thigmotropism
C .  chemotropism
D .  phototropism
Answer: Option D
Phototropism is one of the many plant tropisms or movements which respond to external stimuli. Growth towards a light source is called positive phototropism, while growth away from light is called negative phototropism (skototropism).

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