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Question

The growth of pollen tubes towards ovules is due to

A
Hydrotropism
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B
Chemotropism
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C
Geotropism
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D
Phototropism
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Solution

The correct option is B Chemotropism
Growth of pollen tubes is a directional movement which takes place due to the chemical secretions of the ovule. Therefore, growth of pollen tubes towards ovules is due to chemotropism.
so, the correct answer is 'Chemotropism'

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