Q. 195.0( 1 Vote )

i. What is pollin

Answer :

(i) POLLINATION: Pollination is the act of transferring pollen grains from the male anther of a flower to the female stigma.


TYPES OF POLLINATION



Pollination is chiefly of two types:


• self-pollination


• cross-pollination


SELF POLLINATION: It is the transfer of pollen grains from the anther to the stigma of either the same flower or another flower of the same plant.


It is of two types-


Autogamy- when pollens are transferred from the anther to the stigma of the same flower.


Geitonogamy- when pollens are transferred from the anther to the stigma of another flower of the same plant.


CROSS-POLLINATION: It is the transfer of pollen grains from the anther to the stigma of a flower on the different plant.


It is sometimes also referred to as Xenogamy or Allogamy.


(ii) A diagram showing a longitudinal section of female reproductive part of a flower showing germination of the pollen grain is as follows:



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