1. Unit 6 Part 3 Fungi

2. Characteristics Eukaryotic heterotrophs Multicellular (except yeasts) Cell wall – Made of chitin

3. Characteristics Digest food outside of their bodies and then absorb it – Some absorb decaying matter in the soil (saprotrophic  decomposers) – Some are symbiotic (lichen, plants) – Some are parasitic – absorb nutrients from host

4. Characteristics Fungi as parasites: – Plant diseases (mildew, corn smut) – Human diseases (foot fungus, yeast infections) – Other animal diseases (Cordyceps fungus)

5. Fungal Disease

8. Structure & Function Composed of thin filaments called Hyphae Hyphae are tangled together in a thick mass called mycelium Large surface area for absorbing nutrients

9. Structure & Function Fruiting body – reproductive structure; grows from the mycelium in the soil Can have many f.b.’s emerging from same mycelium

10. Structure & Function Mycelium can live for many years Over time…nutrients are depleted from soil around them…Why? Result…

11. Structure & Function Fairy Rings New fungi sprout at edges of mycelium, forming rings.

12. Reproduction Asexual: – Cells/hyphae break off + grown on own – Scattered spores (reproductive cell; grows into new org. through mitosis alone)

13. Reproduction Sexual : – No “male/female” – Called “+” and “-” – Hyphae from + and – fuse together and produce a diploid zygote

14. Classification Common Mold – Black bread mold Sac Fungi – Largest group of fungi – Includes yeasts

15. Classification Club Fungi – Reproductive structures look like clubs – Extremely diverse