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Kingdom Protista

Kingdom Protista. Most diverse kingdom Live where ever there is moisture Difficult to classify. Three Major Groups. Animal-like – Protozoans Plant-like – Algae Fungus-like . AND NOW THE……. PROTOZOANS THE ANIMAL-LIKE PROTIST. Animal Phyla . Phylum Sarcodina ex. ameba

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Kingdom Protista

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  1. Kingdom Protista Most diverse kingdom Live where ever there is moisture Difficult to classify

  2. Three Major Groups • Animal-like – Protozoans • Plant-like – Algae • Fungus-like

  3. AND NOW THE……. PROTOZOANS THE ANIMAL-LIKE PROTIST

  4. Animal Phyla • Phylum Sarcodina • ex. ameba • Phylum Zooflagellata • Ex. Trypanosoma • Phylum Ciliophora • Ex. Paramecium • Phylum Sporozoa • Plasmodium

  5. Phylum Sarcodina • Projections called psuedopods – used for movement and food gathering • Amebas are shapeless/ radiolarians have a silica shell and foraminiferans have a calcium shell(build up and creates chalk) • Amebas can form resistant cysts • Parasitic amebas can cause dysentery(by drinking contaminated water and food) • Amoeba = genus spelling Ameba = common name

  6. Phylum Zooflagellata • Have flagella for motility • Trichonympha – lives in the gut of the termite and digests wood (mutalistic relationship) • Trypanosoma – found in the saliva of the Tsetse fly/ it causes African Sleeping Sickness

  7. Phylum Ciliophora • Have cilia for motility • Most numerous protozoan • Most are harmless only a few are parasitic • Examples include paramecium, vorticella, stentor

  8. Phylum Sporoza • All are non-motile and mostly parasitic • Have complex life cycles • Example = Plasmodium which is transmitted through the mosquito. It causes Malaria

  9. AND NOW THE….. ALGAE PLANT-LIKE PROTIST

  10. Phylum Dinoflagellata-fire algae • 2 flagella/spin like “tops” • Many are bioluminescent (converts chemical energy to light energy) • Resp. for “Red Tide”

  11. Phylum Bacillariophyta -Diatoms • Unicelluar (look like a box and lid) • Have silica (glass) cell walls • **world’s largest producer of oxygen (Phytoplanton=floating microorganisms that provide basis of food chain and make oxygen) • Float because they contain oil • Useful in filters, toothpaste, silver polish, and paints because they reflect light)

  12. Phylum Euglenophyta - Euglena • Resemble both algae and protozoans • Autotrophic and heterotropic • Flagella and chloroplast • Useful in sewage treatment plants (help breakdown sewage and add oxygen)

  13. Phylum Chloropyta – Green algae • Unicellar, multicelluar or colonies • Very diverse group

  14. Phylum Rhodophyta – red algae • Multicelluar • Warm, saltwater • Live as deep as 260 meters • Accessory pigments to absort light

  15. Phylum Phaeophyta- brown algae • Multicellar • Mostly cool, saltwater • Largest Protist (Giant Kelp_ • Have air bladders to help them float

  16. AND NOW THE FUNGUS-LIKE SLIME MOLDS

  17. Three phyla- Myxomycota, Acrasiomycota, Oomycota • Many produce a Plasmodium (feeding stage) and fruiting body stage (makes spores) • Water molds were responsible for the the Great Potato Famine

  18. ECOLOGICAL ROLES • Plankton • Phytoplankton (prod. Oxygen/ food) • Zooplankton (predators on bacteria/decomposers/recycling)

  19. DISEASES • Amoebic dysentery • Trypanosoma • Plasmodium • ??

  20. Human Uses • Carrageenan (thickner/food enhancer) • Agar (soups/frosting/pudding) • Algin • Diatoms • Bioindicators

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