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Fungi

Fungi. Premier Decomposers. Fungi Characteristics. Heterotrophic Secrete digestive enzymes on organic material and then absorb it Extracellular digestion and absorption. Fungi Characteristics. Most are multicellular Reproduce both asexually and sexually Spore producing

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Fungi

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  1. Fungi Premier Decomposers

  2. Fungi Characteristics • Heterotrophic • Secrete digestive enzymes on organic material and then absorb it • Extracellular digestion and absorption

  3. Fungi Characteristics • Most are multicellular • Reproduce both asexually and sexually • Spore producing • Produce a mesh of filaments called a mycelium • Each filament of the mycelium is called a hypha

  4. Fungi Characteristics • Three major groups: • Zygomycota • Ascomycota: sac fungi • Basidiomycota: club fungi • Imperfect fungi

  5. Spores • Sexual, asexual spores, or both • Depends on contact with other hyphae, food availability, temperature, and dampness • Incredible numbers of spores are produced • Depend on wind and air currents to disperse them

  6. Zygomycetes • Bread mold • Some parasitic species • Stalked hyphae with spore sacs on top

  7. Ascomycetes • Sac Fungi • 30,000 species • Includes truffles and morels • Penicillium that flavors cheeses and makes antibiotic • Yeast

  8. Ascomycetes

  9. Basidiomycetes • The club fungi • The typical mushroom with a stalk and cap • Shelf and bracket fungi • The mushroom is really the reproductive body-the mycelium is buried

  10. Basidiomycetes

  11. Typical Life Cycle

  12. Club Fungi Life Cycle

  13. Imperfect Fungi • Not really a classification group • Used when we cannot detect a sexual phase of spore production • Often includes penicillium and aspergillus

  14. Lichens • Fungus intertwined with a photosynthetic organism • Most of the fungi are sac fungi (Ascomycota) • Most of the photosynthetic components are green algae • The fungus is usually the larger part

  15. Lichens

  16. Mycorrhizae:mutualism between a fungus and a young tree root

  17. Some are Bad Guys • Histoplamosis • Athletes foot • Ringworm • Plant diseases such as Dutch Elm disease, blights, smuts, Chestnut blight

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