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Chapter 21 Fungi

Chapter 21 Fungi. Honors Biology Spring 2009. Kingdom Fungi. Eukaryotic Heterotrophic- external digestion/absorption Saprobe - obtain food from decaying matter Cell walls- chitin Mostly multicellular. Structure of Fungi. Hyphae - tiny filaments

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Chapter 21 Fungi

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  1. Chapter 21Fungi Honors Biology Spring 2009

  2. Kingdom Fungi • Eukaryotic • Heterotrophic- external digestion/absorption • Saprobe- obtain food from decaying matter • Cell walls- chitin • Mostly multicellular

  3. Structure of Fungi • Hyphae- tiny filaments • Mycelium- many hyphae together; makes “body” • Fruiting body- reproductive structure

  4. PAGE 528 Fruiting body Hyphae Mycelium

  5. Fungi Reproduction • Asexual- • Hyphae breaks • Haploid spores • Sexual- • Gametangium- structure that forms gametes

  6. Classification of Fungi • Zygomycota • Common molds • Example- black bread mold

  7. Classification of Fungi • Ascomycota • Sac fungi • Includes yeasts and some mushrooms

  8. Classification of Fungi • Basidiomycota • Club fungi • Most mushrooms

  9. Classification of Fungi • Deuteromycota • Imperfect fungi (lack sexual reproduction) • Includes Penicillium

  10. Anatomy of a Mushroom • Mushroom Dissection Lab • Objective: To be able to identify the main components of a mushroom • Pileus (cap) • Scales • Lamellae (gills), • Stipe (stem or stalk) • Annulus (ring)

  11. Fungi Ecology • Helped plants colonize land • Recycle nutrients and stabilize soil • Decomposers • Symbiotic relationships • Parasites and diseases

  12. Lichens Mycorrhizae Symbiotic Relationships

  13. Common Fungal Diseases • Mycosis- general term describing fungal infections • Superficial • Cutaneous • Subcutaneous • Systemic

  14. Ringworm • Increased fungal growth– warm, moist environment • Scaling, flaking, itching, “ring” pattern • Occur on body, legs, arms, feet, scalp…

  15. Athlete’s foot • Increased fungal growth– warm, moist environment • Scaling, flaking, itching • Antifungal cream

  16. Yeast Infection • Overgrowth of yeast • Redness, itching, soreness, white discharge • Occur in mouth, throat, genitals • Oral antifungal medication and probiotics

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