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Fungi

Fungi. Characteristics. eukaryotic multicellular (except yeasts) heterotrophic by absorption ( saprophytes – feed on dead organic matter) reproduce sexually & asexually no locomotion cell walls made of chitin classified by sexual reproduction decomposers.

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Fungi

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  1. Fungi

  2. Characteristics • eukaryotic • multicellular (except yeasts) • heterotrophic by absorption (saprophytes – feed on dead organic matter) • reproduce sexually & asexually • no locomotion • cell walls made of chitin • classified by sexual reproduction • decomposers

  3. hyphae – rootlike structures for absorbing nutrients • mycelium - all the hyphae in a fungus, collectively

  4. Fungal structure

  5. A. Phylum Oomycota • protist-like fungi • reproduce sexually by oospores • reproduce asexually by sporangia • ex: water molds

  6. B. Phylum Zygomycota • conjugation fungi • reproduce sexually by conjugation - • + & - mating strains of hyphae fuse to form a zygospore • reproduce asexually by sporangia • ex: Rhizopus (black bread mold)

  7. Zygomycota life cycle

  8. Rhizopus

  9. C. Phylum Ascomycota • sac fungi • sexually reproduces by ascospores • asexually reproduces by conidiaor budding • ex: Peziza (cup fungus), morels, yeasts

  10. Ascomycota life cycle

  11. Ascomycetes

  12. Yeasts budding

  13. D. Phylum Basidiomycota • club fungi • sexually reproduces by basidiospores • asexually reproduces by sporangia or not at all • ex: Agaricus (mushroom), puffballs, Amanita (death cap mushroom)

  14. Basidiomycota life cycle

  15. E. Phylum Deuteromycota • imperfect fungi • no known sexual reproduction • asexually reproduce by conidia • ex: ringworm fungus, athletes’s foot fungus

  16. Symbiotic relationships in fungi: • Lichens – fungus & alga living together 2) Mycorrhizae – fungi & tree roots living together

  17. Lichens

  18. Importance of fungi: Helpful • make antibiotics (penicillin) • used in cheese-making (bleu cheese) • used in baking industry (yeast) • used in alcohol industry (yeast) • used as a food source • decomposers

  19. Importance of fungi: Harmful: • cause disease in humans • cause disease in crops • cause allergies • spoil food

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