homospory
Quick Summary
Homospory is a botanical term describing the production of asexual spores of only one kind by various plants, such as club mosses and horsetails. This contrasts with heterospory, where different sporangia produce different types of spores.1
In homosporous life histories, which are common in bryophytes and most pteridophytes (lower vascular plants), only one morphological type of spore is produced. These spores germinate to produce gametophytes, which are the sexual reproductive structures of plants. In pteridophytes, these gametophytes are typically bisexual, meaning they can produce both male and female gametes. In bryophytes, they are usually unisexual.2
The life cycle involves an alternation of generations, where a sporophyte (the spore-producing generation) alternates with a gametophyte (the gamete-producing generation).2
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plantHomosporous life historiesA homosporous life history occurs in nearly all bryophytes and in most pteridophytes (lower vascular plants). It is characterized by morphologically identical spores that germinate to produce bisexual (both male and female) gametophytes in pteridophytes but either bisexual or, more usually, unisexual…
Read MoreA homosporous life history occurs in nearly all bryophytes and in most pteridophytes (lower vascular plants). It is characterized by morphologically identical spores that germinate to produce bisexual (both male and female) gametophytes in pteridophytes but either bisexual or, more usually, unisexual…
Read More- plantEvolution of land plants from the Ordovician Period through the middle Devonian
…primitive vascular plants had a homosporous life cycle, in which reproduction and dispersal involved a single type of spore. Extant homosporous plants include most ferns and many lycophytes. The homosporous life cycle is an effective means for long-distance dispersal of species. Although it permits the fertilization of an egg by…
Read More…primitive vascular plants had a homosporous life cycle, in which reproduction and dispersal involved a single type of spore. Extant homosporous plants include most ferns and many lycophytes. The homosporous life cycle is an effective means for long-distance dispersal of species. Although it permits the fertilization of an egg by…
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