megaspore

views 2,768,767 updated Jun 08 2018

megaspore The larger of two kinds of spore produced by heterosporous ferns, or the first cell of the female gametophyte generation of such ferns and seed plants (angiosperms and gymnosperms). In angiosperms, it is one of 4 haploid cells formed from a megasporocyte during meiosis, the other 3 degenerating. The megaspore of angiosperms divides to produce the female gametophyte (embryo sac).

megaspore

views 1,547,346 updated May 23 2018

megaspore

views 2,367,711 updated May 08 2018

megaspore See SPORE.

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