Assertion: Cells of the sporogenous tissue lying in the centre of the microsporangium, undergo meiosis to form tetrads of microspores.
Reason: Sporogenous tissues are diploid mass of homogenous cells .

Both assertion and reason are true and reason is the correct explanation of assertion.

A group of compactly arranged homogenous cells called the sporogenous tissue lying in the centre of the microsporangium, undergo meiosis (microsporogenesis) to form tetrads of microspores. Individual microspores mature into pollen grains. Pollen grains represents the male gametophytic generation.