1. 11 C Fungus like protists ► Fungus like protists  Heterotrophic, need moist environments  Cell walls of cellulose (not chitin)  Motile  Example: water molds & slime molds

2. 1. Water molds- Phylum Oomycota ► Aquatic members live on dead or decaying organic matter (like dead fish) ► Land members parasitize plants  blights (crop loss) ► Ex. Irish Potato famine (1845-1847) Ireland’s population 8mil to 4 mil  go to USA ► Asexual reproduction: sporangia produce zoospores that swim away ► Sexual reproduction: sperm and ova with fertilization tubes

3. 2. Slime molds – (DECOMPOSERS!) ► 2 phased life cycle-  feeding phase – mold looks like amoeba, eats bacteria & organic matter (slimy white/yellow/red mass)  Reproductive phase - fruiting bodies produce spores

4. 2. Slime molds- cont’d ► A. Phylum Acrasiomycota – cellular slime molds  Amoeba like, unicellular, crawl in moist areas decomposing  When food scarce – gather together into colony (called pseudoplasmodium) looks like slimy slug  forms fruiting bodies

5. 2. Slime molds- cont’d ► B. Phylum Myxomycota – cellular plasmodial slime molds  Plasmodium is multinucleate – cells all come together and cell walls dissolve, creeps like a blob & phagocytizes organic matter  When food is scarse  fruiting body  form sspores  haploid cells emerge  fuse  do mitosis without cytokinesis  new plasmodium