2. Fungus

4. P.B.&J.

5. Tomato

6. Popcorn

7. Wheat Bread

8. Cake

9. Oral Thrush

10. Skin Fungus

11. Ringworm

12. Advanced Athlete’s Foot

13. Ringworm - Foot of 77 year old Woman

14. Paracoccidioidomycosis

15. What is Fungus? Have cell walls (Chitin) Have cell walls (Chitin) Eukaryotic Eukaryotic Unicellular (yeast) Unicellular (yeast) Most Multicellular Most Multicellular Heterotrophic Heterotrophic –(Extracellular Digestion) Absorptive heterotroph Absorptive heterotroph Decomposers, Parasites or Mutualists Decomposers, Parasites or Mutualists

16. Fungal Structure Hyphae Hyphae –Threadlike filaments that develop from spores a. Anchor b. Reproductive c. Invade Energy Source Mycelium Mycelium –Network of Hyphae

17. Feeding  Extracellular Digestion Food is digested outside of cell Food is digested outside of cell Digested products then Absorbed Digested products then Absorbed  3 Types of Feeding 3 Types of Feeding 3 Types of Feeding Saprophytes Saprophytes Mutualists Mutualists Parasites Parasites

18. Saprophytes Decomposers Decomposers –Dead organic material

19. Mutualists Form symbiotic relationship with another organism Mycorrhiza Example: Mycorrhiza – Tree Roots – Give: Water Absorption, Make minerals available – Get : “Food” from Tree 90% of all trees depend on Mycorrhiza

20. Parasitic Absorb nutrients from the cells of host Absorb nutrients from the cells of host Can produce special hyphae known as Haustoria Can produce special hyphae known as Haustoria –Penetrate host cell and absorb nutrients directly

21. Butt Rot

22. Reproduction Fragmentation Fragmentation –Hyphae that get broken off to form new Mycelia Budding Budding –Asexual reproduction Mitosis occurs and a new individual pinches off from parent Mitosis occurs and a new individual pinches off from parent Spores (Most produce spores) Spores (Most produce spores) –Reproductive cell that can develop into new organism

23. Spores Cont. Hyphae emerge from spore Hyphae emerge from spore Sporangium Sporangium –Specialized hyphae that grow away from mycelium –Structure containing spores Over 1 trillion spores can be released from a single sporangium Over 1 trillion spores can be released from a single sporangium –Spores can be dispersed by way of: wind, animals & water