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10 Cards in this Set
- Front
- Back
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key characteristics of fungi
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- eukaryotic
- absorptive heterotrophs - cell walls made of chitin (a polysaccharide) - usually grows as filaments - includes yeasts, molds, mushrooms. - eukaryotic --> unikonta --> fungi |
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absorptive heterotrophs
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- break down complex molecules with digestive enzymes
- complex molecules = organic compounds = carbon source. |
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fungal nutrition
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- absorptive heterotroph
- decomposes - has mutualistic interactions (mycorrhizae) - parasites. |
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hyphae
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- threadlike filaments that compose fungi
- septate hyphae have septum between cells of fungi - specialized hyphae grow into the cells of other organisms - mycellium: mass of hyphae |
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reproduction of fungi
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- both sexual and asexual
- asexual: spore producing structure. - sexual: fusion of cytoplasm and then nuclei to form diploid. meiosis forms spores. - yeast reproduces by budding. |
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fungal classification (3 types)
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- zygomycetes
- ascomycetes - basidiomycetes - all are sexually produced |
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zygomycetes
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- produces zygospores IN a zygosporangium
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ascomycetes
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- produces ascospores IN an ascus
- either 4 or 8 spores |
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basidiomycetes
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-produces basidiospores ON a basidium
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importance of fungus
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- decomposers (element cycling)
- mutualists (endophytes - live within other organisms) - pathogens - food and medicine |
