You are watching: Which of the following is a characteristic of the ascomycota
The thallus is mycelial and also regularly septate with a haploid nucleus per cell. The septum is perferated with a centeral perferation come nuclei can migrate cabinet to cell. Yeasts are unicellular. The thallus has no flagellated cell and no basal bodies or centrioles. The cell wall surface is make of chitin and was ONCE placed in the red heat of evolution.
Specialized tree pathogens, yeasts, and filamentous ascoma creating species-the many of which space lichens.
Most are saprobes, numerous are plant pathogens, some room animal/human pathogens, and a couple of are mycorrhizal.
It is a haploid life cycle, is homo or hetero thallic, has actually modified oogamy in referred to as gametangial contact- the sperm is not motile-, the mrs gametangium is dubbed a ascogonium v a trichogyne (hair), the male gametangium is described as a antheridium. The asci are formed from ascogenous hyphae, which space dikaryotic. Every one of the asci room within a ascocarp (fruit body) or ascoma. Asexual reproduction occurs via conidiospores or conidia.
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Beginning v a young ascus, the ascus experience karyogamy-is dikaryotic- and then self-fertilizes, meitotic department then wake up to kind 4ascospores. The 4 ascospores climate undergo mitotic department to type 8 haploid ascospores in ~ the maturation ascus. These room then forcibly disharged and also germinate. The germinating ascopores have the right to then give birth asexually of preferred and form a conidiophore. The conidiophore have the right to participate in sexual reproduction by occurring both male and also female gametangia. Once mature, the ascogonium then supplies its trichogyne to attach to the antheridium and initiate plasmogamy. When plasmogany occurs, more dikaryotic ascogenous hyphae develop. The then proceed to develope and also grow until they for an ascoma, wherein they are had within it.