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Sporogonium |
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Sporogonium
the sporophyte (asexual generation) of a bryophyte. A sporogonium consists of a capsule, stalk, and haustoria and is embedded in the tissue of the gametophyte (sexual generation), from which it receives nutrient matter. The capsules and stalks are capable of providing, by means of photosynthesis, part of the organic matter necessary for nutrition. The sporogonium develops from the zygote in an enlarged part of the female sex organ, that is, the archegonium. Spores form in the capsule from cells of the archespore as a result of meiosis. In many bryophytes (green mosses, some liverworts) the stalk of the maturing sporogonium elongates, placing the capsule in a favorable position for spore dispersal. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | Scott's skepticism about the derivation of a pteridophyte sporophyte from a bryophyte sporogonium was widely shared. |
Sporogonium |
Sporobolus Sporobolus cryptandrus Sporobolus poiretii sporocarp sporocarp Sporocarp (fungi) Sporocarp (fungi) Sporocarps Sporocarps sporocyst sporocyst sporocyst sporocysts sporocysts sporocysts sporocyte sporocyte sporogenesis sporogenesis sporogenesis sporogenic sporogenic sporogenic sporogenous sporogenous sporogenous sporogeny sporogonic sporogonic sporogonic Sporogonium sporogonoussporogonous sporogonous sporogony sporogony sporogony Sporonox sporont sporont sporont sporonticide sporophore sporophore sporophore sporophores sporophores sporophores Sporophoric sporophyl sporophyll sporophyll sporophyte sporophyte sporophyte sporophytes sporophytes sporophytes sporophytic sporophytic sporophytic | |||||||
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