- embryo sac
- noun Date: 1844 the female gametophyte of a seed plant consisting of a thin-walled sac within the nucellus that contains the egg nucleus and other nuclei which give rise to endosperm on fertilization
New Collegiate Dictionary. 2001.
embryo sac
Look at other dictionaries:
embryo sac — n. Bot. the female gametophyte of a flowering plant, consisting typically of a microscopic elongated sac that is situated within the ovule and contains eight nuclei in seven cells: it gives rise to the embryo and endosperm of the seed after… … English World dictionary
Embryo sac — Em bry*o sac (Bot.) See under {Embryonic}. [1913 Webster] … The Collaborative International Dictionary of English
embryo sac — embryo sac. См. зародышевый мешок. (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.
embryo sac cell — embryo sac cell. См. клетка зародышевого мешка. (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.
embryo sac mother cell — embryo sac mother cell. См. материнская клетка зародышевого мешка. (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.
embryo sac — em′bryo sac n. bot (in flowering plants) a large cell of the rudimentary seed, within which the embryo develops Also called megaspore … From formal English to slang
embryo-sac — emˈbryo sac noun The megaspore of a flowering plant, one of the cells of the nucellus • • • Main Entry: ↑embryo … Useful english dictionary
embryo sac — Bot. the megaspore of a seed bearing plant, situated within the ovule, giving rise to the endosperm and forming the egg cell or nucleus from which the embryo plant develops after fertilization. [1870 75] * * * … Universalium
embryo sac — /ˈɛmbrioʊ sæk/ (say embreeoh sak) noun the gametophyte of a seed bearing plant, being situated within the ovule, giving rise to the endosperm or supposed female prothallium, and forming the cell in which the embryo is developed …
embryo sac — noun : the female gametophyte of a seed plant consisting of a thin walled sac within the nucellus that typically develops from a single functional megaspore and contains several meiotically reduced nuclei which lack separating cell walls and… … Useful english dictionary
