In angiosperms, a mature male gametophyte is formed from a pollen mother cell through

In angiosperms, a mature male gametophyte is formed from a pollen mother cell through one meiotic and two mitotic divisions.
Microsporogenesis in the anther involves the meiotic division of pollen mother cells, which each produce four microspores.
Mature pollen development consists of meiotic and mitotic divisions after meiotic division microspores are generated by microsporocytes and each microspore undergoes asymmetric mitotic division, referred to as pollen mitosis I (PMI), forming the vegetative cell and the generative cell.