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Protists

Protists. Protista Kingdom. Unicellular and Multicellular Heterotrophic and Autotrophic Eukaryotic Contains the most diverse organisms in one kingdom. 3 Kinds of Protists. Protozoa—animal like protists Algae—plant like protists Fungus like protists. Protozoan (animal-like protists).

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Protists

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  1. Protists

  2. Protista Kingdom • Unicellular and Multicellular • Heterotrophic and Autotrophic • Eukaryotic • Contains the most diverse organisms in one kingdom

  3. 3 Kinds of Protists • Protozoa—animal like protists • Algae—plant like protists • Fungus like protists

  4. Protozoan (animal-like protists) • Grouped according to their method of movement: • 1. Amoeba—move using a pseudopodia (false foot)-an extension of their plasma membrane • 2. Flagellates—have one or more flagella (whip-like tail) • 3. Ciliates—have hair-like cilia that cover their bodies (ex: Paramecia) • 4. Sporozoans—produce spores and are parasitic (ex: Plasmodium which causes malaria)

  5. Amoeba proteus • move and eat by use of pseudopods (temporary projections of the cytoplasm)

  6. some use flagella to move

  7. Paramecium caudatum • use cilia for feeding and movement (short hair-like projections)

  8. CLICK

  9. Eyespot – Phototaxis and/or chemotaxis

  10. Algae (plant-like protists) • 1. Euglenoids—can be autotrophic or heterotrophic-use flagella for movement • 2. Diatoms—have shells composed of silica (hard shell; large component of phytoplankton) • 3. Dinoflagellates—have 2 flagella-several species cause fish kills (ex :”red tide”)

  11. Euglena gracilis

  12. Stentor coeruleus

  13. Diatoms

  14. Dinoflagellate

  15. Sounds AWESOME right?! Sadly…not quite true. BEWARE OF BIASED and BOGUS claims by some in the scientific community. Importance of peer research!

  16. Fungus-like Protists • Fungus-like in that they decompose organic materials • Examples include slime molds, water molds, and downy mildew

  17. Slime mold

  18. mildew

  19. Phytophthora infestans

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