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11 April, 16:07

A grapevine growing around a fence post is an example of?

A - phototropism

B-photoperiodism

C - geotropism

D - thigmotropism

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  1. 11 April, 18:02
    0
    The answer is D - thigmotropism

    Tropism is plant growth in a response to a stimulus.

    Through the process of elimination:

    A - phototropism is plant growth in a response to light.

    B - Photoperiodism is an organism reaction to the lengths of days and nights.

    C - Gravitropism is plant growth in a response to gravity.

    D - Thigmotropism is plant growth in a response to contact

    Since a grapevine makes a contact with a fence, this is an example of thigmotropism.
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