Draw a labelled diagram of the sectional view of a mature pollen grain in angiosperms. Explain the functions of its different parts.
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INTINE =The intine comes out through any one germ pore during the germination of pollen grain in the form of pollen tube.
EXINE=The exine usually has one or more thin areas, or pores, through which the pollen tubes germinate.
GENERATIVE CELL=A cell of the male gametophyte (pollen grain) of seed plants that divides to give rise directly or indirectly to sperm.
VEGETATIVE CELL=thevegetative cell produces an elongated
pollen tube,a gametophytic cell, to deliver the male gametes to the embryo sac
EXINE=The exine usually has one or more thin areas, or pores, through which the pollen tubes germinate.
GENERATIVE CELL=A cell of the male gametophyte (pollen grain) of seed plants that divides to give rise directly or indirectly to sperm.
VEGETATIVE CELL=thevegetative cell produces an elongated
pollen tube,a gametophytic cell, to deliver the male gametes to the embryo sac
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