How many of the daughter cells obtained from a megaspore mother cell result in the formation of monosporic embryo sac?

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The megaspore mother cell (2n) undergoes reduction division (meiosis) to form a linear tetrad of four haploid megaspores by megasporogenesis. Generally, 3 megaspores towards micropylar end degenerate and 4 th towards chalazal end remain as the functional megaspore which develops into the embryo sac. Such an embryo sac formed from a single megaspore is termed as monosporic.

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