Question

Transfer of pollen grains (shed from the anther) to the stigma of a pistil is termed

• A.
  Pollination
• B.
  Pollen -pistil interaction
• C.
  Double fertilisation
• D.
  Fertilisation

Answer 1

The correct option is A

Pollination
Fertilisation
Fertilisation is the process of fusion of male and female gametes that results in the production of zygote. Zygote develops into the embryo.

Double fertilisation
Double fertilisation in angiosperms involves the following events:-
1.The egg fuses with one of the male gametes to form the diploid zygote.
2.Central polar nuclei (secondary nucleus) fuse with another male gamete to form a triploid primary endosperm nucleus.

Pollen-pistil interaction
Pollen-pistil interaction is the recognition interaction between stigma and landed pollen based on which pollen is accepted or rejected. Acceptance of pollen leads to development of pollen tube and fertilisation. Rejection of pollen prevents fertilisation.

Pollination
Pollination is the process of transfer of pollen from the anther to the stigma of pistil of the same flower or different flower either on the same plant or on different plants of the same species.