Question

if the pollen grain of a plant falls on the diffrent categori of plant so it will fertilise or not

Answer 1

heya
here is your answer

no it will not fertilise that plant. As the polen grain can fertilise only the plants which are of its species or kind.

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-sneha
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Answer 2

It will not, because the plants have to be of the same species for the flower's pollen grains to pollinate.