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Microsporogenesis:The process of formation microspores from pollen grains mother cells through the meosis

megasporogenesis:The formation megaspore from megaspore mother cell

haploid: It is cell which contain single set of chromosomes 'n'

diploid: cell which contain double set of chromosomes '2n'

Fertilization : The fusion Male(sperm) and female(egg) gamete to form the diploid zygote is known as fertilization

Double Fertilization:It is the process of fusion of one male gamete with the egg nucleus and another male gamete with the polar nuclei or secondary nucleus is called double fertilisation.

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