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Published byPiers Bates Modified over 9 years ago
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Protists Kingdom Protista
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Characteristics of Protists most live in water (though some live in moist soil or even the human body) A protist is any eukaryotic organism that is not a plant, animal or fungus
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Classification how they obtain nutrition how they move
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Animal-like protists: Protozoans Zooflagellates - flagella Sarcodines - extensions of cytoplasm (pseudopodia) Ciliates - cilia Sporozoans - do not move
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Zooflagellates move using one or two flagella absorb food across membrane
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Paramecium (Ciliate) move using cilia food is gathered through the :mouth pore, moved into a gullet, forms a food vacuole anal pore is used for removing waste contractile vacuole removes excess water exhibits avoidance behavior reproduces asexually or sexually outer membrane is rigid and paramecia are always the same shape, like a shoe
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Paramecium
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Amoeba (Sarcodine) moves using pseudopodia ( "false feet" ) ingests food by surrounding and engulfing food (endocytosis), creating a food vacuole reproducing by binary fission contractile vacuole - removes excess water
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Plasmodium (Sporozoan) Do not move Parasites- get their food from a host cell Plasmodium causes the disease malaria which is transmitted by mosquito bites (saliva to human blood) Drug Quinine is used to treat malaria Reproduces by making a spore (no fertilization so asexual reproduction)
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Plasmodium (causes malaria)
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Plant-like protists: unicellular algae contain chlorophyll and carry out photosynthesis
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Euglena live in water have 2 flagella for movement use chlorplasts for photosynthesis, but can turn into heterotrophs if they are kept in the dark has an eyespot used for sensing light and dark cell wall-like, helps maintain their shapes
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Euglena
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Fungus-like Protists heterotrophs, decomposers called slime molds and water molds
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