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Fungi- Chapter 14. Fungi Eukaryotic Unicellular and multicellular Most are composed of hyphae (fungal filaments) Nuclei occur in continuous mycelium.

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Presentation on theme: "Fungi- Chapter 14. Fungi Eukaryotic Unicellular and multicellular Most are composed of hyphae (fungal filaments) Nuclei occur in continuous mycelium."— Presentation transcript:

1 Fungi- Chapter 14

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4 Fungi Eukaryotic Unicellular and multicellular Most are composed of hyphae (fungal filaments) Nuclei occur in continuous mycelium Heterotrophic absorbers Cell wall present and predominantly made of chitin Reproduction is asexual and sexual Life cycles are variable Numbers- ~100,000 species described Habitat- ubiquitous, but primarily terrestrial Size- microscopic and macroscopic Storage product- glycogen

5 Unikonts Lack chitin ~1000 species Habitat- Soil, freshwater, and marine Example- Rozella. Phylum Cryptomycota

6 Phylum Chytridiomycota Aseptate. ~800 species Habitat –Soil from desert, ditches, and banks of ponds and streams, rumen of large mammals Motile zoospores and gametes with a single whiplash flagellum Example- Allomyces Sexual reproduction involves the formation of a sporophyte Asexual by zoospores

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8 Phylum Microsporidia Spore forming unicellular animal parasites ~1500 species Lack mitochondria, golgi, and peroxisomes Reproduce by forming spores that shoot polar tubes into host cells Example- Microsporidium

9 Phylum Glomeromycota Arbuscular endomycorrhizae 200 species so far Occur in about 80% of vascular plants Aseptate, coenocytic Asexual, large multinucleate spores Example- Glomus

10 Phylum Zygomycota Aseptate ~1000 species Habitat –Plant and animal tissue in soil, some are parasitic on plants, insects, and small soil animals Nonmotile. Example- Rhizopus stolonifer (common bread mold) Sexual reproduction involves the formation of a zygosporangium Asexual by nonmotile spores

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13 Phylum Ascomycota Septate ~32,000 species Habitat –Leaves, wood, plant fruit. Nonmotile Examples- Neurospora (powdery mildew), Morchella (morel), Saccharomyces (yeast) Sexual reproduction involves the formation of asci on an ascocarp Asexual by budding, conidiospores, fragmentation

14 Phylum Basidiomycota Septate ~22,000 species Habitat –Plant litter Nonmotile Examples- Agaricus (mushroom), Puccinia (rusts), Ustilago (smuts) Sexual reproduction involves the formation of basidia on an basidiocarp Asexual by budding, conidiospores, fragmentation

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16 Lichens Mycobiont and phycobiont Mycobiont= part Ascomycota & Basidiomycota ~13,000 species Habitat –From the desert to the poles Nonmotile Examples- Caloplaca (crustose), Parmelia (foliose), Usnea (fruticose) Reproduction is by fragmentation

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