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Kingdom Protista: Algae and Heterotrophic Protists Chapter 15

Kingdom Protista: Algae and Heterotrophic Protists Chapter 15. Heterotrophic Phyla. Oomycota - water molds. Myxomycota - plasmodial slime molds. Dictyosteliomycota - cellular slime molds. Oomycota - water molds. Characteristics Unicellular, coenocytic and filamentous.

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Kingdom Protista: Algae and Heterotrophic Protists Chapter 15

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  1. Kingdom Protista: Algae and Heterotrophic Protists Chapter 15

  2. Heterotrophic Phyla • Oomycota- water molds. • Myxomycota- plasmodial slime molds. • Dictyosteliomycota- cellular slime molds.

  3. Oomycota- water molds • Characteristics • Unicellular, coenocytic and filamentous. • Saprophytic and parasitic. • Food reserve- glycogen. • Eukaryotic nucleus. • Zoospores- 1 tinsel and 1 whiplash. • Cell wall cellulose/cellulose-like. • Habitat- marine,freshwater, terrestrial. • 700 species. • Examples- Saprolegnia and Phytophthora.

  4. Phytophthora- sudden oak disease, Ireland potato famine, crop destruction.

  5. Myxomycota- plasmodial slime molds • Characteristics • Streaming protoplasm. • Saprophytic and engulf bacteria, yeast, fungal spores. • Food reserve- glycogen. • Eukaryotic nucleus. • Gametes- 2 unequal, apical, whiplash. • No cell wall. • Habitat- terrestrial. • 700 species. • Example- Physarum.

  6. Dictyosteliomycota- cellular slime molds • Characteristics • Amoeba-like cells that form slugs. • Engulf bacteria. • Food reserve- glycogen. • Eukaryotic nucleus. • Flagella- none. • Cell wall cellulose. • Habitat- terrestrial. • 50 species. • Examples- Dictyostelium.

  7. Dictyostelium- cellular slime mold

  8. Dictyostelium

  9. Photosynthetic Phyla (the algae) • Myzozoa- dinoflagellates. • Euglenozoa- euglenoids. • Cryptophyta- cryptomonads. • Haptophyta- haptophytes. • Chlorophyta- green algae. • Rhodophyta- red algae. • Heterokontophyta- heterokont algae. • Phaeophyceae- brown algae. • Chrysophyceae- golden-brown algae. • Bacillariophyceae- diatoms.

  10. Myzozoa- dinoflagellates • Characteristics • Unicellular, colonal. • Chlorophylls A and C, peridinin. • Food reserve- starch in cytoplasm. • Thylakoids in 3. • Mesokaryotic nucleus. • Flagella- 1 transverse and 1 longitudinal. • Cell wall with cellulose in thecal plates. • Habitat- marine and freshwater. • 4,000 species. • Examples- Ceratium, Peridinium, Dinophysis, Alexandrium, Pfiesteria.

  11. Pfiesteriapiscicida

  12. Euglenozoa

  13. Euglenozoa- euglenoids • Characteristics • Unicellular. • Chlorophylls A and B, carotenoids. • Food reserve- paramylon in cytoplasm. • Thylakoids 2-3. • Mesokaryotic nucleus. • 2 unequal flagella, long one with hairs. • No cell wall, proteinaceous pellicle. • Eyespot. • Habitat- marine and freshwater; puddles, ditches, ponds, streams, lakes, rivers. • 1,000 species. • Example- Euglena.

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