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PROTISTS

PROTISTS. Diatoms. Commonalities / Differences in the Protist Kingdom. All are eukaryotes (cells with nuclei). Live in moist surroundings. Unicellular or multicellular. Autotrophs, heterotrophs, or both. Some can move - others cannot. 3 categories of Protists. Animal-like . Fungus-like.

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PROTISTS

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  1. PROTISTS Diatoms

  2. Commonalities / Differences in the Protist Kingdom • All are eukaryotes (cells with nuclei). • Live in moist surroundings. • Unicellular or multicellular. • Autotrophs, heterotrophs, or both. • Some can move - others cannot.

  3. 3 categories of Protists • Animal-like • Fungus-like • Plant-like

  4. Animal-like Protists (Protozoans) *Unicellular *Consumers *Groups based on movement: flagella, cilia, pseudopods

  5. Protozoans with pseudopods • Pseudopods also called ‘false feet’ • Cytoplasm flows this allows the protozoan to move, dragging the rest of the cell behind it.

  6. Pseudopods, cont. Can form 2 pseudopods to surround & trap food. Food vacuole forms to break down food.

  7. Example of a protozoa that uses pseudopods – • Amoeba

  8. Protozoans with cilia • Cilia - hair likestructures - help organisms move, get food and sense environment. • Oral groove lined with cilia - moves food into food vacuole at end of oral groove.

  9. Example of protozoan w/ cilia: • Paramecium.

  10. Protozoans with flagella • Use long whip like “tail” called flagella to move.

  11. Example of a protozoa with flagella Giardia Found in contaminated water and can cause severe diarrhea

  12. Other Protozoans • Some protozoans are parasites • Feed on cells & body fluids of hosts Plasmodium (causes malaria) have more than 1 host: mosquitoes and then humans

  13. Fungus like Protists • Decomposers • Produce spore (seed like structures) • have cell walls of chitin • Not in fungi kingdom because they can move at one point in their lives.

  14. Fungus-like Protists exampleSlime mold

  15. Plantlike Protists • Producers • unicellular to very large multicellular • Contain different pigments so they come in different colors. Green cholorphyll is common

  16. Plantlike Protists • Euglena: • special type of algae -when there is no sunlight they become consumers Flagella

  17. Plant-like Protists example Volvox Diatoms Euglena Kelp-a.k.a. Seaweed Dinoflagellates

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