Which of the following options is correct?

Easy

A

Pistil cannot recognise whether the pollen is right or wrong type.
B

Pollen-pistil interaction is a dynamic process involving pollen recognition followed by only acceptance of the pollen.
C

The events – “from pollen deposition on stigma until pollen tubes enter the ovule” are together referred to as pollen-pistil interaction.
D

Pollination gives the guarantee of the promotion of post-pollination events that lead to fertilization

Solution

The events – “from pollen deposition on stigma until pollen tubes enter the ovule” are together referred to as pollen-pistil interaction.
Whereas
The pistil has the ability to recognise the pollen, whether it is of the right type (compatible) or of the wrong type (incompatible).
Pollen-pistil interaction is a dynamic process involving pollen recognition followed by promotion or inhibition of the pollen.
Pollination does not give the guarantee of the promotion of post-pollination events that lead to fertilization. If it is of the right type of pollen, the pistil accepts the pollen and promotes post-pollination events that leads to fertilisation.

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