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Published byAnis McDowell Modified over 8 years ago
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KINGDOM: PROTISTA “It’s a small world, after all...”
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WHAT IS A PROTIST? PROTISTS : Uni- or multicellular Have a TRUE nucleus (eukaryotic) Can be heterotrophic or autotrophic LIVES IN MOIST SURROUNDINGS
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WHY STUDY PROTISTS? PROTISTS... ARE THE BASIS OF MANY FOOD CHAINS Help control BACTERIAL populations by EATING THEM
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PROTISTS ALSO... CAN CAUSE DISEASES ARE IMPORTANT IN HOUSEHOLD PRODUCTS
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THREE KINDS OF PROTISTS PLANT LIKE (are autotrophic) ANIMAL LIKE (move to food) FUNGUS LIKE (decomposer)
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ANIMAL-LIKE PROTISTS Known as PROTOZOANS HETEROTROPHIC UNICELLULAR Have the ability to MOVE
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AMOEBA
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AMOEBA or AMEBA MOVE AND FEED USING A PSEUDOPOD OR “FALSE FOOT”
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ANIMAL-LIKE PROTISTS AMOEBA PSEUDOPODS form when the cytoplasm moves
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ANIMAL-LIKE PROTISTS AMOEBA AMOEBAS GET RID OF EXTRA WATER WITH A CONTRACTILE VACUOLE
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ANIMAL-LIKE PROTISTS AMOEBA
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AMOEBA Amoeba feed on bacteria and smaller protists
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PARAMECIUM PARAMECIUM MOVE USING CILIA – HAIRLIKE EXTENSIONS FROM THE CELL (and now to the videotape!)
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Check out the PARAMECIUM EATING!!
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ANIMAL-LIKE PROTISTS PARAMECIUM Like amebas, paramecium have a contractile vacuole to remove excess water.
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PARAMECIUM Paramecium feed on bacteria and smaller protists
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ANIMAL-LIKE PROTISTS PARAMECIUM The movement of the cilia sweeps food into the oral groove
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PARAMECIUM – Draw your own in your notebook and label the parts
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ANIMAL-LIKE PROTISTS PARAMECIUM and AMOEBA Both paramecium and amebas mostly reproduce asexually by binary fission. Some paramecium can reproduce sexually by conjugation.
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PROTOZOANS WITH FLAGELLA Zooflagellates use flagella to move Many are parasites They live inside the bodies of other organisms
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PROTOZOANS WITH FLAGELLA Giardia is a human parasite Causes “hiker’s disease”
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FUNGUSLIKE PROTISTS Are heterotrophs Act like decomposers Absorb their food
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FUNGUSLIKE PROTISTS A water mold caused the Irish potato famine in the 1840’s
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FUNGUSLIKE PROTISTS Slime molds live on decaying plants Some can be seen with the naked eye
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PLANTLIKE PROTISTS CONTAIN CHLOROPHYLL Uni- or multi-cellular KNOWN AS “ALGAE” AUTOTROPHIC
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PLANTLIKE PROTISTS EUGLENA UNICELLULAR HAVE CHLOROPLASTS Use flagella to move towards light AUTOTROPHIC IN LIGHT EYESPOT detects light
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EUGLENA Euglena becomes Heterotrophic IN DARK
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GENERAL ALGAE information MOST ARE UNICELLULAR which live in colonies LIVE IN FRESHWATER OR SALTWATER
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MULTICELLULAR ALGAE is called SEAWEED.
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THREE “MAIN” COLORS OF ALGAE 1. Green Algae 2. Red Algae 3. Brown Algae
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RED ALGAE LIVE IN DEEP OCEAN WATERS RED PIGMENT CAN ABSORB THE LITTLE LIGHT FOUND AT THOSE DEPTHS
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RED ALGAE CARRAGEENAN COMES FROM RED ALGAE Used as a THICKENING AGENT in ICE CREAM “Yummy, yummy, yummy I got protists in my tummy”
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BROWN ALGAE IMPORTANT FOOD SOURCE for many oceanic animals. Found in COLD water ecosystems. Can you name an animal that lives near or with brown algae?
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BROWN ALGAE GIANT KELP FORMS LARGE UNDERWATER FORESTS, HOME TO MANY ORGANISMS
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