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(a) Draw a labelled diagram of the sectional view of microsporangium of an angiosperm.
(b) Explain the development of male gametophyte in the microsporangium.

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(b) Each cell of sporogenous tissue, gives rise to microspore mother cell. The process of formation of microspores from a pollen mother cell (PMC) through meiosis is called microsporogenesis. The microsopores as they are formed are arranged in a cluster of four cells, i.e., the microspore tetrad. At the 2-celled stage, the microspores dissociate form pollen grains (male gametophyte).

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