In angiosperms,the embryo sac is developed fr | vedclass

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(A) The $Megaspore$ $mother$ $cell$ $(MMC)$ undergoes meiosis to form four megaspores.Out of these four,usually one megaspore remains functional and d

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Megaspore mother cell

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(A) The $Megaspore$ $mother$ $cell$ $(MMC)$ undergoes meiosis to form four megaspores.Out of these four,usually one megaspore remains functional and develops into the embryo sac (female gametophyte).Depending on the number of megaspore nuclei participating in the development,the embryo sac formation is classified as monosporic,bisporic,or tetrasporic.Therefore,the embryo sac originates from the megaspore mother cell.

In angiosperms,the embryo sac is developed from:

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$A$ typical angiosperm embryo sac at maturity has

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