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Kingdom: Protista

Kingdom: Protista. By Dr. Hesnaa Saeed Al- Mossawi. Kingdom: Protista. Protists are unicellular organisms that have a nucleus. Can be classified according to their nutrition : Animal-like— heterotrophs (eat other organisms ) b. Plant-like— autotrophs They contain chloroplasts

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Kingdom: Protista

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  1. Kingdom: Protista By Dr.HesnaaSaeed Al-Mossawi

  2. Kingdom: Protista Protists are unicellular organisms that have a nucleus. Can be classified according to their nutrition: Animal-like—heterotrophs (eat other organisms) b. Plant-like—autotrophs They contain chloroplasts and make their own food (photosynthesis). Fungus-like— Decomposers/Heterotrophs Didinium Paramecium Green like plants! Water mold

  3. Animal-like Protists (Protozoans) • Called Protozoans • Unicellular • Require water (live in water or moist soil) • Most heterotrophic • Some photosynthetic • Most are free-living • Some parasitic • Classified according to the Method of Movement: • Cilia—hair-like projections used for movement and feeding • Cytoplasmic streaming—pseudopod (false foot) extends and cytoplasm streams into it. • Have a Flagellum: a long whip-like structure used for movement. • all Sporozans are parasites(no movements) ,They feed on cells and body fluids, formed from Spores (tiny reproductive cells).

  4. II. Plant-like Protists (Algae) • Unicellular and Multicellular • Colonies (groups of unicellular protists) • Can move on their own • Autotrophs: make their own food from simple materials using light energy (photosynthesis). • Pigments: chemicals that produce color • Unicellular Algae: • Phytoplanktonprovides a source of nourishment for other organisms • b. Protistsrecycle sewage and waste materials. • Algal blooms are harmful when overgrown—deplete water of nutrients consequently killing fish. • Multicellular Algae: • Red Algae • Green Algae • Brown Algae

  5. III. Fungus-like Protista • Heterotrophs • Have cell walls. • Many have flagella and are able to move at some point in their lives. • Three types: Slime Molds, Water & Downy Molds • Reproduce with Spores (tiny cell that is able to grow into a new organism) • Beneficial— • Recycles dead organic material providing nutrients for plants. • Harmful • PhytophthoraInfestans(water mold) caused Great Potato Famine in Ireland

  6. Protozoa -protistae • Protozoa • Amoeba • Entamoeba histolytica • Naegleria • Acanthamoeba • Flagellates • Giardia lamblia • Trichomonas vaginalis • Trypanosoma • Leishmania • Ciliates • Balantidium coli • Sporozoa • Plasmodium • Cryptosporidium • Toxoplasma

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