First slide

Pre-fertilisation : Structures and Events

Question

Find out the correct statement.

Easy

A

Most of the flowering plants produce unisexual flowers.
B

Autogamy is not seen in common pansy (Viola).
C

Plants with chasmogamous bisexual flowers can show autogamy, geitonogamy and xenogamy.
D

In papaya, geitonogamy is promoted but xenogamy is prevented.

Solution

In plants with chasmogamous bisexual flowers, autogamy or self pollination, geitonogamy or intra-plant pollination and xenogamy or interplant pollinations can be carried out.
In papaya, only xenogamy is possible as the plant is dioecious. Common pansy (Viola) has cleistogamous flowers which invariably show autogamy. Most of the flowering plants form bisexual flowers.

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