archegonium

archegonium
—archegonial, archegoniate /ahr'ki goh"nee it, -ayt'/, adj.
/ahr'ki goh"nee euhm/, n., pl. archegonia /-nee euh/. Bot.
the female reproductive organ in ferns, mosses, etc.
[1850-55; < NL, equiv. to archegon- ( < Gk archégonos first of a race; see ARCHE-, GONO-) + -ium < Gk -ion dim. suffix]

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▪ plant anatomy
      the female reproductive organ in ferns (fern) and mosses (moss). An archegonium also occurs in some gymnosperms (gymnosperm), e.g., cycads and conifers. A flask-shaped structure, it consists of a neck, with one or more layers of cells, and a swollen base—the venter—which contains the egg. Neck-canal cells, located above the egg, disappear as the archegonium matures, thus producing a passage for entry of the sperm. The sperm are produced in the corresponding male reproductive organ, the antheridium.

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Look at other dictionaries:

  • Archegonium — (unreif, reif, und befruchtet) von Marchantia polymorpha …   Deutsch Wikipedia

  • Archegonium — Ar che*go ni*um, n. [NL., fr. Gr. ? the first of a race.] (Bot.) The pistillidium or female organ in the higher cryptogamic plants, corresponding to the pistil in flowering plants. [1913 Webster] …   The Collaborative International Dictionary of English

  • archegonium — archegonium. См. архегоний. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Archegonĭum — (griech.), das weibliche Geschlechtsorgan der höhern Kryptogamen (s. d. und Moose) …   Meyers Großes Konversations-Lexikon

  • Archegonium — Archegonium, mehrzelliges, von einer einschichtigen Wand aus sterilen Zellen umgebenes, meist flaschenförmiges f Gametangium der Moose und Farnpflanzen, in dem stets nur eine Eizelle gebildet wird. Am Grunde des A. befindet sich eine… …   Deutsch wörterbuch der biologie

  • archegonium — [är΄kə gō′nē əm] n. pl. archegonia [är΄kə gō′nē ə] [ModL, dim. < Gr archegonos, the first of a race: see ARCH & GONIUM] the flask shaped female reproductive organ in mosses, ferns, and other related plants archegonial adj …   English World dictionary

  • Archegonium — Diagram of archegonium anatomy An archegonium (pl: archegonia), from the ancient Greek ἀρχή ( beginning ) and γόνος ( offspring ), is a multicellular structure or organ of the gametophyte phase of certain plants, producing and containing the ovum …   Wikipedia

  • Archegonium — Ar|che|go|ni|um 〈[ çə ] n.; s, ni|en; Bot.〉 weibl. Fortpflanzungsorgan bei Moosen u. Farnen [<grch. archegonos „uranfänglich, zuerst entstanden“] * * * Archegonium   [zu griechisch archégonos »Stammvater eines Geschlechts«, »Urheber«] das, s/ …   Universal-Lexikon

  • archegonium — noun (plural archegonia) Etymology: New Latin, from Greek archegonos originator, from archein to begin + gonos procreation; akin to Greek gignesthai to be born more at arch , kin Date: 1854 the flask shaped female sex organ of bryophytes, lower… …   New Collegiate Dictionary

  • archegonium — Female sex organ of liverworts, mosses, ferns and most gymnosperms …   Dictionary of molecular biology

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