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5 Cards in this Set
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what is supergroup opisthokonta |
monophyletic group of animals and true fungi. closest relatives are choanoflagellates. synapomorphies are flattened mitochondrial cristae and single posterior flagella |
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what's a fungus? |
monophyletic and related to animals. have fine branches called hyphae that collectively form mycelium whose walls are composed of either chitin or cellulose. excrete exozymes for digestion and store glycogen. can be saprobic, parasitic, or mutualistic. can produce toxic substances and are a integral part of soil |
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what is phylum chrytridiomycota |
parasitic fungus directly related to eumycotan fungi. produce uniflagellate opisthokont zoospores. have a dominant haploid phase and a diploid phase that is the zygote that functions as a spore or a meio-sporangia. simpler types are holocarpic or eucarpic. can have coenocytic cells with sporangia outside host and rhizoids inside. |
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what is eumycotan fungi |
form spores that are resistant to desiccation and have no flagellate cells. monophyletic and can be divided into: phylum zygomycota, phylum dikaryomycota, subphylums ascomycotina and basidiomycotina. also contains groups: conidial fungi, yeast, lichen. have teleomorphs (sexual structure) and anamorphs (asexual structure) which together form the holomorph. |
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what is phylum zygomycota |
includes saprobes that colonize terrestrial substrates like bread, overripe fruit, etc. a few are parasites - mucomycoses. hyphae are thick and delicate. teleomorph phase (sex. reprod.) involves conjugation of morphologically similar hyphae (gametangia) to form zygosporangium (zygote under meiosis) |
