Question

How pistil recognises pollen grain of right type?

Answer 1

If the pollen is of the wrong type, the pistil rejects the pollen by preventing pollen germination on the stigma or the pollen tube growth in the style. The ability of the pistil to recognise the pollen followed by its acceptance or rejection is the result of a continuous dialogue between pollen grain and the pistil.

Answer 2

The pistil is a chemotactic reaction which recognises the pollen grain of the right type.

Explanation:

• The pistil recognise pollen grains of right type because of the physical constituents and the chemical constituents.

• The chemical constituents is the determinant of the right and the wrong type of the pollen grains.

• The unwanted pollen grain gets disrupted in the body of the pistil and fertilization does not take place.

To know more about fertilization in flowers,

Give the whole process of fertilization in flowers

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