kingdom protista
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Kingdom Protista. Chapter 20. What is a protist? any organism that is not a plant, animal, fungus, or prokaryote. Domain Eukarya , Kingdom Protists Eukaryotic – HAVE A NUCLEUS Mostly unicellular Heterotrophic or autotrophic Aquatic or moist habitats. Animal-like Protists - Protozoans. - PowerPoint PPT PresentationTRANSCRIPT
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Kingdom Protista
Chapter 20
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What is a protist? • any organism that is not a plant,
animal, fungus, or prokaryote.
• Domain Eukarya, Kingdom Protists• Eukaryotic – HAVE A NUCLEUS• Mostly unicellular• Heterotrophic or autotrophic• Aquatic or moist habitats
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• Heterotrophic • feed on bacteria, organic matter, other
protozoans, and fungi
Animal-like Protists - Protozoans
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Grouped according to movementSarcodines – move by pseudopod
“false feet”Ciliates – move with cilia
Tiny hair-like projectionsZooflagellates – move by flagella
Long whip-like structureSporozoans - parasitic
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Plant-like ProtistsAutotrophic – carry out photosynthesis
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•Phytoplankton (small, unicellular algae found near the surface of bodies of water)
•produce about 75% of the Earth’s oxygen
•Basis of most aquatic food chains
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Dinoflagellates• Red tides – increased nutrients cause protists to grow out of control
• Some species produce a strong nerve toxin that gets into shellfish and can harm you if you eat it.
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Diatoms• cell walls made of silicon• used to make toothpaste
abrasive and road paint
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Algae• used in sushi, ice cream, agar,
deodorant, hair conditioner, salad dressing, pudding
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Fungus-like protists• decomposers, have
cell walls, and reproduce by spores
• slime molds, water molds, and mildew
• Attack potatoes, cabbage, and corn
• The Great Hunger was caused by this group of protists
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• Plasmodium—carried by Anopholes mosquito• causes malaria
• Trypanosoma—carried by the tsetse fly• causes African sleeping sickness
• Giardia, Entamoeba, Cryptosporidium• causes amoebic dysentery
Diseases cause by Sporozoans:
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• Toxoplasma gondii• Causes toxoplasmosis, can be contracted from an infected cat or poorly cooked meat. Harmful to a developing fetus.