1. Microorganisms and Fungi
Protists
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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?
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A. The Kingdom Protista
Protists - any organism that is Eukaryotic; but not a plant, animal, or fungi.
Protists can be unicellular, multicellular, or colonial.
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Protists are either:
heterotrophic (animal-like)
autotrophic (plant-like)
decomposers/parasites (fungus-like)
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5. 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
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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
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Phylum Ciliophora (ciliates)
Use cilia for feeding and movement
Found in fresh and salt water
Free-living – don’t exist as parasites
Example: Paramecium
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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
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Figure 20-7 The Life Cycle of Plasmodium
Section 20-2
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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
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Phylum Chrisophyta (chyrsophytes):
Gold-colored chlorophyll
Includes yellow-green algae and golden-brown algae
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Phylum Bacillariophyta (Diatoms)
Produce thin, delicate cell walls rich is silicon – the main component of glass
Sexually reproduce and asexually reproduce.
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Phylum Pyrrophyta (dioflagellates)
½ are photosynthetic
½ are heterotrophic
Have 2-flagella
Reproduce asexually
Cause of red Tides
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Phylum Rhodophyta: (red Algae)
Lives in deep water
Contains chlorophyll A
Multicellular
Helps form coral reefs
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Phylum Phaeophyta (Brown Algae)
Marine organisms
Live in shallow water
Most complex algae
Contains Chlorophyll A and C
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Phylum Chlorophyta: (green algae)
Cell wall
Chlorophyll A and B
Found in fresh and marine water
Single celled, multi celled, and colonial.
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23. C. Fungus – Like Protists
Phylum Acrasiomycota (cellular slime molds)
Free-living cells
Absorb nutrients from dead/decaying matter
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Phylum Myxomycota (acellular slime molds)
Single cell with many nuclei
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Phylum Oomcota (water Mold)
Feed on dead or decaying matter,
Both sexual and asexual reproduction
Caused the Potato Famine of Ireland in 1846
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