megaspore
noun Etymology: International Scientific Vocabulary Date: 1857 a spore in heterosporous plants giving rise to female gametophytes and usually larger than a microspore • megasporic adjective

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • megaspore — megaspore. См. макроспора. (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.

  • megaspore — (n.) 1857, from MEGA (Cf. mega ) + SPORE (Cf. spore) …   Etymology dictionary

  • megaspore — [meg′ə spôr΄] n. [ MEGA + SPORE] a haploid spore, usually larger than a microspore of the same plant, which gives rise to a female gametophyte: found in all vascular plants that have differentiated sexes in the gametophyte megasporic adj …   English World dictionary

  • Megaspore — Plant ovules with megasporocytes before meiosis: Gymnosperm ovule on left, angiosperm ovule (inside ovary) on right Megaspores, also called macrospores, are a type of spore that is present in heterosporous plants. These types of plants have two… …   Wikipedia

  • Mégaspore — Macrospore La macrospore (ou mégaspore) est une cellule haploïde issue de la méiose à l origine du gamétophyte femelle. Chez les végétaux, une macrospore (ou mégaspore) haploïde (n) est issue de la méïose d une cellule mère diploïde (2n), le… …   Wikipédia en Français

  • megaspore — SYN: macrospore. * * * mega·spore meg ə .spō(ə)r, .spȯ(ə)r n 1) a spore in heterosporous plants that gives rise to female gametophytes and is generally larger than a microspore 2) MACROSPORE mega·spor·ic .meg ə spōr ik, spȯr adj * * *… …   Medical dictionary

  • megaspore — megaspora statusas T sritis augalininkystė apibrėžtis Viena iš keturių haploidinių ląstelių, susidarančių megasporocitų mejozės metu. Iš tos ląstelės susidaro moteriškasis gametofitas, t. y. gemalo maišelis. atitikmenys: angl. macrospore;… …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • Megaspore — Unter Heterosporie versteht man in der Botanik das Phänomen, dass die Sporen einer Art unterschiedliche Größen haben und verschieden aufgebaut sind. Männliche Sporen sind hierbei kleiner und reservestoffärmer als weibliche. Erstere werden auch… …   Deutsch Wikipedia

  • megaspore — Haploid spore produced by a plant sporophyte, that develops into a female gametophyte …   Dictionary of molecular biology

  • megaspore — megasporic /meg euh spawr ik, spor /, adj. /meg euh spawr , spohr /, n. Bot. 1. the larger of the two kinds of spores characteristically produced by seed plants and a few fern allies, developing into a female gametophyte. Cf. microspore. 2. the… …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”