GYMNOSPERMS & ANGIOSPERMS: Evolution of the Seed

Inside each megasporangium, a cell undergoes meiosis to produce a megaspore. The megaspore divides by mitosis to form a female gametophyte. Unlike the gametophytes of ferns and bryophytes, the female gametophyte of seed plants is very small and is retained inside the megasporangium. As always, the female gametophyte produces the female gametes ... ................
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