Apospory and apogamy in pteridophytes biology discussion
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Apogamy is the development of an unusual haploid sporophyte from the gametophyte without the fusion of gametes. ... Natural apogamy is common in ferns like Dryopteris, Adiantum, Osmunda, Pteris etc. Apospory is the development of unusual diploid gametophyte from the vegetative parts of sporophyte and not from the spores.
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