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12 Cards in this Set
- Front
- Back
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what are fungi |
eukaryotic membrane enclosed nuclei and mitochondria have cell walls usually made of chitin reproduce by spores always heterotrophic body structure consist of tubes [hyphem] |
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asexual reproduction in Rhizopus |
most common columella divides by mitosis to form spores spore= 1 haploid nucleus these are held in the sporangium the dry sporangium opens up to release spores spores blow away and on suitable substrate |
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nutrition |
heterotrophic saprophytic and parasitic |
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parasitic fungi |
athletes foot ringworms |
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saprophytic fungi |
mushrooms moulds |
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edible fungi |
field mushrooms |
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Sexual reproduction in Rhizopus |
hyphae from opposite strains grow close together swellings form and touch nuclei move into swellings form progametangia walls between gametangia dissolve diploid zygote is produced by the joining of the two nuclei |
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Sexual reproduction in Rhizopus |
two walled zygospore forms around the nucleus zygospore remains dormant when conditions are suitable it germinates by meiosis haploid hypha grows out of the zygospore and produces sporangium Sporangium releases spores |
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yeast sacchromyces |
single celled, round/oval , tiny thin walls [chitin] contains food storage vacuoles , one nucleus to each cell respire anaerobically breaking down sugar into ethanol and carbon dioxide asexual reproduction in yeast occurs by budding |
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reproduction in yeast |
parent cell divides by mitosis and are nucleus and some cytoplasm enters bud budding is the name of this reproduction reproduce asexually |
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economic advantages |
used to produce alcohol mushrooms as a food makes bread rise truffles can be sold some fungi make antibiotics used in cheese making |
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economic disadvantages |
cause decay bread mould potato blight mildew dry rot on timber fungal diseases in humans plant diseases |
