megagametogenesis

megagametogenesis
макрогаметогенез
* * *
макрогаметогенез

English-russian biological dictionary. 2013.

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  • Megagametogenesis — is the development of a megaspore into an embryo sac, which is the gametophyte though a highly reduced one stage in the life cycle of vascular plants. Contents 1 Eudicots 2 Monocots 3 See also 4 …   Wikipedia

  • 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

  • angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction       any member of the more than 300,000 species of flowering plants (division Anthophyta) …   Universalium

  • Flowering plant — Flowering plants Temporal range: Early Cretaceous Recent …   Wikipedia

  • Megaspore mother cell — A megaspore mother cell is a diploid cell in which meiosis will occur, resulting in the production of four megaspores.[1] This megasporcyte is formed from two distinct processes – megasporogenesis and megagametogenesis.[2] Within each sporangium …   Wikipedia

  • Apomixis — Saltar a navegación, búsqueda …   Wikipedia Español

  • Flor — Para otros usos de este término, véase Flor (desambiguación). Partes de la flor …   Wikipedia Español

  • Morfología floral — Partes de la flor …   Wikipedia Español

  • Oósfera — La oósfera es el gameto femenino de las espermatofitas (angiospermas y gimnospermas). Se halla en el saco embrionario, dentro del óvulo y rodeada, típicamente, por dos células adyacentes llamadas sinérgidas. La oósfera procede de una espora,… …   Wikipedia Español

  • Sincitio — Micrografía de músculo esquelético. En la periferia de cada célula cortada t …   Wikipedia Español


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