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What are fungi more closely related to animals or plants? |
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Definition
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Definition
small filaments that make up the vegetative body |
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What are the cells walls mostly composed of? |
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Definition
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What plant matter do they usually decay to obtain nutrients? |
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Definition
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Definition
fungi that eats dead orgainic matter |
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describe the nuclei of fungi |
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Definition
small with little repetitive DNA |
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True or False: all fungi are non-vascular |
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Definition
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Which type of fungi undergo alternation of generations? |
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Definition
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In what form do fungi store their energy? |
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Definition
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TRUE or FALSE: some fungi are photosynthetic |
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Definition
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Why do fungi need to live in moist environments to avoid drying out? |
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Definition
they dry out easily due to the high suface area from the hyphae |
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Term
WHat are the two growth forms of fungi? |
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Definition
single cellular yeats and multicellular mycelia |
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Term
List the four phyla of fungi fro most basal to most derived |
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Definition
chitridiomycota, zygomycota, ascoycota, basidiomycota |
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Term
Which group of fungi do not have septa in their hyphae? |
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Definition
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Term
How do gametes of chytridiomycetes move? |
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Definition
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True or False the ascomycota undergo only sexual reproduction. |
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Definition
FALSE! They have both a sexual and asexual |
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Term
Which type of fungi is most used in the formation of lichens |
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Definition
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Which part of the ascomycese produce spores? |
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Definition
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How do zygomycota reproduce? |
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Definition
By yoking their hyphae together |
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Term
Which phylum of fungi is the kind people usually identify as mushrooms? |
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Definition
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Definition
spore-bearing
surface, such as the gills |
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Definition
cap found on basidiomycota that bears the gills that carry the basidia |
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Term
What are ectomycorrhizae? |
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Definition
the fungus forms an external sheath of mycelium around the root tips, and hyphal cells do not penetrate the cell walls |
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Term
What are endomycorrhizae? |
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Definition
the root cortex cells of the plant are invaded by the fungus |
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Definition
Lichens are a symbiosis between an alga or a cyanobacteria and a fungus |
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Term
Why do biologists study fungi? |
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Definition
- fungi provide nutrients for land plants - fungi are key model organisms in eukaryotic genetics |
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Term
What part of the carbon cycle do fungi contribute to? |
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Definition
The release of CO2 from plants, animals and fungi as a result of cellular respiration |
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What are mycorrhizal fungi? |
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Definition
fungi associated with plant roots |
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How many species of fungi regularly cause illness in humans? |
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Definition
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What is the name of the fungi that is used in research on cell biology and molecular genetics? |
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Definition
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Term
Why is Saccharomyces cerevisiae so frequently used in research? |
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Definition
- easy to culture and manipulate in lab - grows rapidly - meetings can easily be created and transferred among individuals |
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Term
What is the estimated total species of fungi? |
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Definition
1.65 million species or higher |
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Term
What are the two growth forms of fungi |
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Definition
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Term
What is the typical ploidy of hyphae? |
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Definition
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What does heterokaryotic mean? |
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Definition
Heterokaryotic means having to haploid nuclei (also dikaryotic) |
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Definition
Septa are cell-like compartments that separate filaments |
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Term
What is a commensal relationship? |
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Definition
A commensal relationship is one in which one species benefits while the other is unaffected |
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Term
What drove the diversification of fungi? |
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Definition
The evolution of novel methods were absorbing nutrients from a wide array of food sources drove the diversification of fungi |
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Term
What is an endophytic association? |
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Definition
An endophytic association is an association between a plant and a fungi that occurs above ground |
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Term
What group of fungi comprises most EMF? |
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Definition
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Term
Describe the mutualistic relationship between EMF and plants |
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Definition
EMFs provide nitrogen and phosphate ions to the host plant and receive sugars and other complex carbon compounds in return |
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Term
What is the name of the fungi that grow into the cells of root tissue? |
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Definition
Arbuscular mycorrhizal fungi (AMF) |
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Term
What do AMF provide to plants? |
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Definition
AMF provide phosphorus to the plants, but they do not provide nitrogen |
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Term
True or False: most endophytic fungi are parasitic |
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Definition
False: endophytes are not parasitic |
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Term
How do saprophytic fungi feed? |
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Definition
Saprophytes seek out large, complex molecules such as cellulose, lignin, proteins and nucleic acids and break them down into hundreds or thousands of smaller compounds |
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Term
True or False: fungi and a few bacterial species are the only organisms that can digest wood completely |
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Definition
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Term
Describe the process of extracellular digestion? |
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Definition
The fungi secrete enzymes Compounds resulting from enzymatic action are then absorbed by the hyphae |
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Term
What does coenocytic mean? |
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Definition
Coenocytic means the hyphae lack septa |
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