Question

Explain various stages development of male gametophyte in the microsporangium

Answer 1

Answer:

Explanation:

The pollen grain is the male gametophyte in angiosperms. Microsporangia (singular: microsporangium) are bilobed pollen sac structures. Microspores develop and mature into pollen grains in them.

Inside the microsporangium, Pollen mother cell (PMC) undergoes meiosis and results in four microspores which eventually mature into pollen grains. The inner layer called tapetum nourishes the developing microspores. The pollen grains consist of two cells out of which a generative cell within a pollen tube cell. Once the microsporangium is matured it bursts and releases the pollen from the anther and pollen grain consists of two layers. The outer thick layer is called exine and the inner thin layer is called inline which protects the pollen from damage.

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