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प्रश्न
The growth of pollen tubes towards ovules is due to
पर्याय
hydrotropism
chemotropism
geotropism
phototropism
MCQ
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उत्तर
chemotropism
Explanation -
The stigma of the flower releases a chemical which guides the pollen tube through style towards the ovule. Here the movement occurs in response to a chemical. Such a type of movement is called chemotropism.
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