What is pollination? How does it lead to fertilization? Explain with the help of diagram.



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The process of transfer of pollen grains from anther to the stigma of the flower of a plant of same species is known as pollination. The fusion of male and female gametes take place only after pollination. 
The pollen grains are deposited on the stigma by pollination. The pollen grains germinate on stigma producing a tube known as pollen tube. The pollen tube grows downward into the style and reaches to ovary. Finally it enters into the ovule through a minute pore. Here one male gamete fuses with egg. It is the act of actual fertilization by which production of zygote and development of embryo take place.

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