Bio 111 - Lecture 6 - Biology 111 Lecture 5b Fungus-Like...

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Biology 111 Lecture 5b - Fungus-Like Protists September 24, 2007 I. Introduction to “Fungus-Like Protists” --slime molds and water molds-- A. Review - basic protist characteristics: eukaryotic, heterotrophic, saprobes (eat dead stuff) - (what else was saprobic? ... ) B. Classification Problem - are slime-molds and water-molds Protists or Fungi? - Similar in Some ways - produce spores - heterotrophic and saprobic - water molds look like mold BUT slime molds and water molds have... - Motile stage in life cycle - fungi are NOT motile - adults may be diploid - plasmodial slime mold is diploid - cellular slime mold is haploid - haploid in fungi - cell walls are made of cellulose - chitin in fungi II. Classification A. Phylum Myxomycota - Slime Molds ----plasmodial slime molds (diploid) - Characteristics 1. Coenocytic with diploid nuclei (have more than one nucleus) - mitosis without cytokinesis 2. Plasmodium = single mass of cytoplasm with numerous diploid nuclei 3. Heterotrophic by ingestion (phagocytosis)
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