For the formation of a tetrasporic embryo sac | vedclass

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(A) In the development of an embryo sac,a single megaspore mother cell $(MMC)$ undergoes meiosis to produce four megaspores.In monosporic development,

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(A) In the development of an embryo sac,a single megaspore mother cell $(MMC)$ undergoes meiosis to produce four megaspores.In monosporic development,only one megaspore is functional.In tetrasporic development,all four megaspore nuclei participate in the formation of the embryo sac.Since all four nuclei originate from the meiosis of a single $MMC$,only $1$ megaspore mother cell is required for the formation of a tetrasporic embryo sac.

For the formation of a tetrasporic embryo sac,how many megaspore mother cells are required?

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