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Growth of part X is...

Growth of part X is

A

chemotropism

B

thigmotaxis

C

geotropic

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
The pollen tube paves its way through the solid part of the stigma and style by secreting pectinases and hydrolytic enzymes. Pollen tube travels intercellularly and chemotropically along the concentration gradient of calcium -boron-inosital sugar complex.
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