Growth of pollen tube towards ovule can be an example of:

Phototropism

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Geotropism

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Hydrotropism

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Chemotropism

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Solution

The correct option is C Chemotropism
Movements are shown by plants in response to stimuli like light, water, gravity, etc. Chemotropism is the growth movement shown by the plant structures towards the chemical stimulus. For example, chemicals released by the ovary act as a stimulus for the growth of pollen tube/s towards the ovule.
Thus, the correct answer is option D.

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