Question

Events in development of male gametophyte.​

Answer 1

Answer:

Male gametophyte development is often divided into two major phases, an early phase that comprises microspore and bicellular pollen, and a late phase including tricellular and mature pollen. ... More genes are expressed in the early phase with nearly 12 000 active genes in microspores and bicellular pollen.

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Answer 2

Answer:

Formation of the male gametophyte in flowering plants takes place within specialized male reproductive organs called the stamens. During microsporogenesis, diploid pollen mother cells undergo meiotic division to produce tetrads of haploid microspores.