megasporangium
a spore-bearing structure that bears megaspores that develop into megagametophytes
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
megasporangium
The organ in which megaspores are formed.
megaspore
The larger of two types of spores produced by many ferns and seed plants.
megasporangium Sporangium that contains megaspores.
megaspore Haploid cell produced by meiosis in the ovules of angiosperms; a single megasporocyte produces four megaspores, only one of which remains functional.
which develop in the megasporangium and
which will develop into the female gametophyte generation.
Link to a discussion of the alternation of gametophyte and sporophyte generations
Both types of sporangia are formed in flowers.
the gnetophytes Gnetum and Welwitschia because the megagametophyte is reduced to just a few cells, one of which differentiates into the egg cell. The function of surrounding the gamete is assumed in large part by diploid cells of the megasporangium ...
 See also: Plant, Ovule, Offspring, Egg, Cells
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