מילון אונליין

  חיפוש ברשת      מילון      חיפוש בפורום

 

Ascus – מילון אנגלי-עברי

מילים נרדפות: reproductive structure
Babylon English-Hebrewהורד מילון בבילון 9 למחשב שלך
ascus
(ש"ע) נאדית (בבוטניקה: תא יוצר נבגים)

Ascus – מילון אנגלי-אנגלי

מילים נרדפות: reproductive structure
Babylon Englishהורד מילון בבילון 9 למחשב שלך
ascus
n. spore sac found in certain types of fungi (Botany)

English Wikipedia - The Free Encyclopediaהורד מילון בבילון 9 למחשב שלך
Ascus
An ascus (plural asci; from Greek ἀσκός ảskós 'skin bag') is the sexual spore-bearing cell produced in ascomycete fungi. Asci usually contain eight ascospores, produced by meiosis followed, in most species, by a mitotic cell division. However, asci in some genera or species can occur in numbers of one (e.g. Monosporascus cannonballus), two, four, or multiples of four. In a few cases, the ascospores can bud off conidia that may fill the asci (e.g. Tympanis) with hundreds of conidia, or the ascospores may fragment, e.g. some Cordyceps, also filling the asci with smaller cells. Ascospores are nonmotile, usually single celled, but not infrequently may be coenocytic (lacking a septum), and in some cases coenocytic in multiple planes. Mitotic divisions within the developing spores populate each resulting cell in septate ascospores with nuclei. The term ocular chamber, or oculus, refers to the epiplasm (the portion of cytoplasm not used in ascospore formation) that is surrounded by the "bourrelet" (the thickened tissue near the top of the ascus).

See more at Wikipedia.org...


© This article uses material from Wikipedia® and is licensed under the GNU Free Documentation License and under the Creative Commons Attribution-ShareAlike License
WordNet 2.0הורד מילון בבילון 9 למחשב שלך
ascus

Noun
1. saclike structure in which ascospores are formed through sexual reproduction of ascomycetes
(hypernym) reproductive structure
(part-holonym) ascomycete, ascomycetous fungus


Webster's Revised Unabridged Dictionary (1913)הורד מילון בבילון 9 למחשב שלך
Ascus
(n.)
A small membranous bladder or tube in which are inclosed the seedlike reproductive particles or sporules of lichens and certain fungi.
  

Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
Free English-Vietnamese Dictionaryהורד מילון בבילון 9 למחשב שלך
ascus
ascus /'æskəs/
  • danh từ, số nhiều asci
    • (thực vật học) nang (nấm)

    (C) 2007 www.TừĐiểnTiếngViệt.net







    © 2007 מילון G בבילון אונליין - נתמך ע"י מילון בבילון 9