In Pinus,the female gametophyte develops only | vedclass

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(B) In $Pinus$,the megaspore mother cell undergoes meiosis to produce four haploid megaspores. Out of these four megaspores,the three upper megaspores

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The lower most haploid megaspore

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(B) In $Pinus$,the megaspore mother cell undergoes meiosis to produce four haploid megaspores. Out of these four megaspores,the three upper megaspores degenerate,while only the lowermost functional megaspore develops into the female gametophyte. This process is similar to the development of the embryo sac in many angiosperms,where the functional megaspore is the one closest to the chalazal end.

In $Pinus$,the female gametophyte develops only from:

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