Question

why is fertilization not possible without pollination​

Answer 1

Answer:

In a flower , fertilisation requires both male and female gametes.If pollination does not occur male gametes will not be available hence fertilisation can't take place.

Answer 2

Fertilisation depends upon pollination because when the pollen grains are stick to stigma flower (of the same species) then stigma makes a liquid to which the pollen grains respond by formimg a pollen tube. In the pollen tube male gamete is present which makes its way along the tube and reaches the ovule , it goes inside and fuses with female gamete. This fusion of male and female gamete is called syngamy and its product is called zygote.

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