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  1. Plant bends towards the source of light on account of the movement of curvature known as

  2. A.

     geotropism

    B.

     thigmotropism

    C.

     chemotropism

    D.

     phototropism

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    Answer : Option D

    Explanation :

    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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