Microorganisms and Fungi Protists Downloaded from www.pharmacy123.blogfa.com

Downloaded from www.pharmacy123.blogfa.com Key Concepts: What are protists? What are the types of animal-like protists? What are the types of plant-like protists? What are the types of fungus-like protists? Downloaded from www.pharmacy123.blogfa.com

Downloaded from www.pharmacy123.blogfa.com A. The Kingdom Protista Protists - any organism that is Eukaryotic; but not a plant, animal, or fungi. Protists can be unicellular, multicellular, or colonial. Downloaded from www.pharmacy123.blogfa.com

Downloaded from www.pharmacy123.blogfa.com Protists are either: heterotrophic (animal-like) autotrophic (plant-like) decomposers/parasites (fungus-like) Downloaded from www.pharmacy123.blogfa.com

B. Animal-Like Protists Phylum Zooflagellates – Move using a flagella (whip-like tail) Can have one or two flagella Most reproduce asexually Absorb food through their cell-membranes Downloaded from www.pharmacy123.blogfa.com

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Downloaded from www.pharmacy123.blogfa.com Phylum Sarcodina – (sarodines) Move by pseudopodia (false feet) Usually live in water Captures food by wrapping the pseudopodium around it and ingesting it. Example: Amoeba Downloaded from www.pharmacy123.blogfa.com

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Downloaded from www.pharmacy123.blogfa.com Phylum Ciliophora (ciliates) Use cilia for feeding and movement Found in fresh and salt water Free-living – don’t exist as parasites Example: Paramecium Downloaded from www.pharmacy123.blogfa.com

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Downloaded from www.pharmacy123.blogfa.com Phylum Sporozoa All members of this phyla are PARASITES Life cycles involve more than one host Examples: The Plasmodium sporozoan causes malaria and is carried by the female Anopheles mosquito Downloaded from www.pharmacy123.blogfa.com

Downloaded from www.pharmacy123.blogfa.com Figure 20-7 The Life Cycle of Plasmodium Section 20-2 Downloaded from www.pharmacy123.blogfa.com

Downloaded from www.pharmacy123.blogfa.com C. Plant-Like Protists Phylum Euglenophyta (euglenophytes) Move by 2 flagellas Have no cell wall Reproduce asexually Performs photosynthesis (make’s it’s own food) Example: Euglena Downloaded from www.pharmacy123.blogfa.com

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Downloaded from www.pharmacy123.blogfa.com Phylum Chrisophyta (chyrsophytes): Gold-colored chlorophyll Includes yellow-green algae and golden-brown algae Downloaded from www.pharmacy123.blogfa.com

Downloaded from www.pharmacy123.blogfa.com Phylum Bacillariophyta (Diatoms) Produce thin, delicate cell walls rich is silicon – the main component of glass Sexually reproduce and asexually reproduce. Downloaded from www.pharmacy123.blogfa.com

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Downloaded from www.pharmacy123.blogfa.com Phylum Pyrrophyta (dioflagellates) ½ are photosynthetic ½ are heterotrophic Have 2-flagella Reproduce asexually Cause of red Tides Downloaded from www.pharmacy123.blogfa.com

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Downloaded from www.pharmacy123.blogfa.com Phylum Rhodophyta: (red Algae) Lives in deep water Contains chlorophyll A Multicellular Helps form coral reefs Downloaded from www.pharmacy123.blogfa.com

Downloaded from www.pharmacy123.blogfa.com Phylum Phaeophyta (Brown Algae) Marine organisms Live in shallow water Most complex algae Contains Chlorophyll A and C Downloaded from www.pharmacy123.blogfa.com

Downloaded from www.pharmacy123.blogfa.com Phylum Chlorophyta: (green algae) Cell wall Chlorophyll A and B Found in fresh and marine water Single celled, multi celled, and colonial. Downloaded from www.pharmacy123.blogfa.com

C. Fungus – Like Protists Phylum Acrasiomycota (cellular slime molds) Free-living cells Absorb nutrients from dead/decaying matter Downloaded from www.pharmacy123.blogfa.com

Downloaded from www.pharmacy123.blogfa.com Phylum Myxomycota (acellular slime molds) Single cell with many nuclei Downloaded from www.pharmacy123.blogfa.com

Downloaded from www.pharmacy123.blogfa.com Phylum Oomcota (water Mold) Feed on dead or decaying matter, Both sexual and asexual reproduction Caused the Potato Famine of Ireland in 1846 Downloaded from www.pharmacy123.blogfa.com