Question

How does a bisexual flowering plant ensures cross pollination ? explain

Answer 1

Answer:

The bisexual flowering plant ensures cross pollination by the following ways:

• Pollen release and stigma receptivity are not synchronised.
• Anther and stigma are placed at different heights.
• Self incomatibility is a genetic mechanism which prevents self pollen (from the flowers of the same plant) from fertilising the ovules by inhibiting the pollen germination or pollen tube growth in the plant.

Answer 2

Answer:

A bisexual flower has both androecium and gynoecium because of this self-pollination occurs most of the time but sometimes due to insect pollinators and wind, cross-pollination may occur. Artificial techniques for cross-pollination in such flowers can be used to ensure cross.

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