First slide

Pre-fertilisation : Structures and Events

Question

Growth of pollen tube is

Easy

A

Apical and chemotactic
B

Basal and chemotropic
C

Apical and chemotropic
D

Basal and chemotactic

Solution

Pollen tube shows apical growth and it grows towards the synergids of embryo sac in response to chemical stimulus of synergids. Hence the growth is apical and chemotropic. Auxins are responsible for apical growth of pollen tube.

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