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Biology Kingdom Fungi
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Fungi Characteristics
Plantlike – they are stationary Animal-like – they are heterotrophs Either Parasites or Saprophytes
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Structure of Fungi Has very thin filaments called: Hyphae
Hyphae grow and branch out to form a mat of filaments called: Mycelium Visible portion is only small part
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Cell wall composed of chitin
Fungi Cell wall composed of chitin
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Major Features of Fungi
Hyphae are divided into cells by cross-walls called septa. Septa allow nutrients, cytoplasm, and organelles to flow between cells. Some fungi are aseptate.
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Three types of fungi that differ in how they obtain nutrients
Saprophytic fungi Parasitic fungi Mutualistic fungi
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Saprophytic fungi are decomposers that recycle nutrients from dead organisms.
Parasitic fungi absorb nutrients from the living cells of another organism. Mutualistic fungi live in a mutualistic relationship with another organism.
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Classification of Fungi
Chytridiomycota (chytrids) Zygomycota (common molds) Ascomycota (sac fungi) Basidiomycota (club fungi) Deuteromycota (imperfect fungi)
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Characteristics of Chytridiomycota (Chytrids)
Unicellular Most are aquatic Some are saprophytic Produce flagellated spores
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Zygote Fungi Common Bread Mold, Rhizopus
Specialized hyphae from two different organisms meet and form a zygote
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Zygote Fungi Hyphae called rhizoids, anchor fungus to food source
Most are saprophytes Some are parasites – feed on potatoes
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Club Fungi Mushrooms, shelf fungi, rusts, puffballs
Contain club shaped structures called Basidia, where sexual spores are produced
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Club Fungi Mushrooms are just reproductive part of mushroom
Gills contain basidia Some are good, some are not – toadstools = poisonous
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Sac Fungi Yeasts, cup fungi, mildew
Form sac like structures called ascus Yeast are unicellular Some sac fungi useful in medicine
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Lichens Dual organism Fungus and algae
Love to decompose and are a food for elk and reindeer
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