1. Part 4: Fungi 10-7

2. Traits Multicellular, eukaryotic, non-motile Cell walls made of chitin Heterotrophic (absorb food!) –Have filaments called hyphae…used to anchor, feed, & reproduce –Network of hyphae called a mycelium –Secretes enzymes Habitat = everywhere! (but usually moist areas)

3. Examples of Fungi Mushrooms Molds Yeast Shelf fungi Morels Lichen

4. Harmful Effects Disease –Athlete’s foot; yeast infections; toenail fungus; ringworm; etc Crop/food damage –Plants hit especially hard –Cattle diseases

5. Helpful Effects Decomposers –Break down dead stuff Some antibiotics (penicillin) Food products –Yeast = breads, beer, etc –Some cheeses; mushrooms

6. How do fungi get their food? Secrete enzymes into surrounding matter… hyphae soak up nutrients Is extracellular digestion… absorb nutrients after they have been broken down

7. How do fungi get their food? Grouped according to where they get food: –Saprophytes…from dead stuff (ex: mold on food) –Mutualists…symbiotic relationship (ex: lichen) –Parasites…from living organisms (ex: toe fungus)

8. How do fungi reproduce? Asexually (no transfer of DNA) –Fragmentation – pieces break off & grow into new fungi bodies –Budding – new cell pinches off from old one (occurs in yeasts)

9. How do fungi reproduce? Sexually (transfer of DNA) –Spores are reproductive cells that turn into new fungi bodies –Very large # of spores made; are small & light for easy dispersal