In flowering plants,a mature 'male gametophyt | vedclass

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(B) The development of the male gametophyte in angiosperms begins with the 'pollen mother cell' $(PMC)$,which is diploid $(2n)$.$1$. First,the $PMC$ u

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One meiotic and two mitotic divisions

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(B) The development of the male gametophyte in angiosperms begins with the 'pollen mother cell' $(PMC)$,which is diploid $(2n)$.$1$. First,the $PMC$ undergoes one meiotic division (meiosis) to produce four haploid $(n)$ microspores,which form a pollen tetrad.$2$. Each microspore then undergoes two successive mitotic divisions to develop into a mature male gametophyte.$3$. The first mitotic division produces a large vegetative cell and a small generative cell.$4$. The second mitotic division occurs in the generative cell to produce two male gametes.Thus,the mature male gametophyte is $3$-celled (one vegetative cell and two male gametes) and is formed by one meiotic and two mitotic divisions.

In flowering plants,a mature 'male gametophyte' is derived from a 'pollen mother cell' by

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