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KINGDOM PROTISTA

KINGDOM PROTISTA. Chapter 9: Section 1 . What is a Protist ??. Protist - An organism that lives in a moist or wet habitat C ontains organisms that don’t fit anywhere else! ALL PROTISTS Have a nucleus (eukaryotic) SOME PROTISTS Single celled/Many celled Make food/Consume food .

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KINGDOM PROTISTA

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  1. KINGDOM PROTISTA Chapter 9: Section 1

  2. What is a Protist?? • Protist- An organism that lives in a moist or wet habitat • Contains organisms that don’t fit anywhere else! • ALL PROTISTS • Have a nucleus (eukaryotic) • SOME PROTISTS • Single celled/Many celled • Make food/Consume food

  3. Plantlike Protists • Otherwise known as ALGAE • All- • contain chlorophyll make own food • Some- • Single-celled/many-celled • Are not green b/c a different pigment covers chlorophyll • Divided into 6 phyla according to their pigments and how they store food

  4. Plantlike Protist Phyla: Euglenophyta • Common name- Euglenas • Characteristics: • Single-celled • Pigment is chlorophyll • Stores food as carbohydrates • No cell wall, but thick layer inside cell membrane • Moves using flagella (whip like tail) • Has an eyespot that respond to light

  5. Euglena!

  6. Plantlike Protist Phyla: Chrysophyta • Common name- Diatoms • Characteristics: • Single-celled • Stores food as oil • Golden-brown pigment & chlorophyll • Cell wall is a glasslike shell made from silica

  7. Diatoms!

  8. Plantlike Protist Phyla: Pyrrphyta • Common name: Dinoflagellates • Characteristics: • Single-celled • Stores food as oil & starch • Red pigment & chlorophyll • Move with 2 flagellum causing it to spin • Many produce a chemical that causes them to glow!

  9. Dinoflagellates!

  10. Plantlike Protists Phyla: Chlorophyta • Common name: Green Algae • Characteristics: • Single-celled and many-celled • Store food as starch • Contains only chlorophyll

  11. Green Algae!

  12. Plantlike Protist Phyla: Rhodophyta • Common name: Red Algae • Characteristics: • Most are many- celled • Store food as starch • Contain red pigment that absorbs minimal light

  13. Red Algae!

  14. Plantlike Protist Phyla: Phaeophyta • Common name: Brown Algae • Characteristics: • Many-celled • Store food as starch • Brown pigments & chlorophyll

  15. Brown Algae!

  16. Diatom shells are used in paints & make up (make it shiny) and toothpaste (make it abrasive) Red Algae is used in pudding and toothpaste (makes them creamy & smooth) Brown Algae is used in ice cream & marshmallows (makes thick) and is eaten in sushi & salads Algae and You!

  17. Algae is also important for… • A main food source for herbivores of the water • Provides oxygen through photosynthesis

  18. Animal-like Protists • Otherwise known as PROTOZOA • All single-celled organisms • Can’t make their own food (heterotrophs) • Contain special vacuoles for digesting food & ridding excess water • Four phyla based on method of movement

  19. Animal-like Protist Phyla: Sacrodines • Common name: The Amoebas • Use a temporary extension of the cytoplasm called a pseudopod to: • Move- extend a section out and drag forward • Eat- extension surrounds the food particle (endocytosis)

  20. Animal-like Protist Phyla: Zoomastigina • Common name: Flagellates • Move by whipping one or more flagella

  21. Animal-like protist phyla: Ciliophora • Common name: Ciliates • Move by using cilia • Short threadlike fibers that beat back/forth • Have two nuclei • Feed through an “oral groove”

  22. Ciliate (Paramecium)

  23. Animal-like protist phylum: Sporozoa • Have no way of moving on their own • Only survive as a parasite Plasmodium is the protist that causes Malaria

  24. Importance of protozoa • Good- Consuming bacteria • Example: Waste water treatment • Bad- Disease causing • Examples: African Sleeping Sickness, Malaria, dysentery (diarrhea) The amoeba that causes acute diarrhea! Trysanopoma among red blood cells in someone with Sleeping Sickness

  25. Fungus-like protists • Have features of protists and fungi • ALL • Reproduce using spores • Obtain energy from decomposing organic materials

  26. Fungus-like protist: Slime Mold • At times use pseudopods to move and feed like an amoeba • Most of their life is spent acting like a fungus • Feeding on decaying matter and producing spores

  27. Fungus-like protists: Water molds & Downy Mildew • Protist like b/c reproductive spores have flagellum to move • Fungus like b/c they grow as a mass of threads over a plant or animal, digest it and then absorb its nutrients

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