Megaspore mother cell

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, meiosis of a megaspore mother cell produces four haploid megaspores.[2] In gymnosperms and angiosperms, only one of these four megaspores is functional and the other three soon degenerate. The megaspore that remains divides mitotically and develops into the female gametophyte, which eventually produces eggs.[2]

References

  1. ^ Solomon, Eldra P., 2005, Biology, Thomson, Brooks/Cole, United States
  2. ^ a b c Raven, Peter H., 2005, Biology of Plants, W.H. Freeman and Company Publishers, United States

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  • megaspore mother cell — megaspore mother cell. См. материнская клетка мегаспор. (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 mother cell — a type of diploid cell that develops in the megasporangium of plants and divides by meiosis to produce four haploid daughter cells called the megaspores; usually only one megaspore survives to become a megagametophyte (female gametophyte) …   Medical dictionary

  • megaspore mother cell —   That cell in a megasporangium that produces a megaspore by meiosis …   Expanded glossary of Cycad terms

  • megaspore mother cell — noun A cell that forms four megaspores by meiosis; a megasporocyte …   Wiktionary

  • megaspore mother cell — noun : a cell that produces megaspores by reduction usually in tetrads or linear groups …   Useful english 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

  • 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

  • megasporemother cell — megaspore mother cell n. Botany A cell that undergoes meiosis to produce four megaspores. Also called megasporocyte. * * * …   Universalium

  • материнская клетка мегаспор — megaspore mother cell материнская клетка мегаспор. Диплоидный макроспороцит, дающий в результате мейоза гаплоидные макроспоры. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО,… …   Молекулярная биология и генетика. Толковый словарь.

  • Ovule — This article is about the plant structure. For animal ovules, see ovum. Micropyle and Ovular redirect here. For the structure in animals, see Micropyle (zoology). For the shape, see oval. Location of ovules inside a Helleborus foetidus flower… …   Wikipedia

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