Question

describe the structure of stamen and process of microsporogenesis.

Answer 1

Sporogenous cells develop into microsporocytes (also known as pollen mother cells or male meiocytes), which undergo meiosis to form tetrads of haploid microspores. ... At floral/anther stage 13, the flower opens and anther dehiscence occurs to release the pollen.

Answer 2

the male reproductive part of a flower is called stamen.
it consists of anther and filament
filament is  a stalk like structure and joins base of flower and the anther
anther is that part which produces the pollen grains
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in the process of microsporogenesis 4 haploid microspores are produced from each diploid sporogenous cells after meiotic division