in plants fertilisation process takes place with the help of pollination pollen grain is taken away by some dispersal agent to the ovary of the flower, stick to the stigma of the bursts here and forms two male gametes...a tube is formed here which runs to the ovule of the flower....these male gametes enters into the ovule of the flower with the help of this one male gamete is fertilised by the female gamete(ova) and one is fertilised by the polar nuclei........the male gamete is fertilised by the ova forms zygote which on maturing forms embryo and at last baby plant..... 
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