The growth of pollen tubes towards ovules is due to

Hydrotropism

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Chemotropism

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Geotropism

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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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Question 18
The growth of pollen tubes towards ovules is due to

(a) hydrotropism
(b) chemotropism
(c) geotropism
(d) phototropism

After pollination, the growth of pollen tube on stigma toward ovule is due to:

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