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