Unit 6: Microorganisms and Fungi - SCHOOLinSITES

Unit 6: Microorganisms and Fungi Chapter 20: Protists Key Concepts:

What are What are protists? What are protists? What are protists? protists? the types of animal-like

the types of plant-like the types of fungus-like A. The Kingdom Protista 1. 2. Protists - any organism that is Eukaryotic; but not a plant, animal, or fungi.

Protists can be unicellular, multicellular, or colonial. 3. Protists are either: a) b) c) heterotrophic (animal-like)

autotrophic (plant-like) decomposers/parasites (fungus-like) B. Animal-Like Protists 1. Phylum Zooflagellates a) b) c) d)

Move using a flagella (whip-like tail) Can have one or two flagella Most reproduce asexually Absorb food through their cellmembranes 2. Phylum Sarcodina (sarodines) a) b)

c) d) Move by pseudopodia (false feet) Usually live in water Captures food by wrapping the pseudopodium around it and ingesting it. Example: Amoeba

3. Phylum Ciliophora (ciliates) a) b) c) d) Use cilia for feeding and movement Found in fresh and salt water Free-living dont exist as parasites

Example: Paramecium 4. Phylum Sporozoa a) b) c) 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 Figure 20-7 The Life Cycle of Plasmodium Section 20-2 C. Plant-Like Protists

1. Phylum Euglenophyta (euglenophytes) a) b) c) d) e) Move by 2 flagellas

Have no cell wall Reproduce asexually Performs photosynthesis (makes its own food) Example: Euglena 2. Phylum Chrisophyta (chyrsophytes): a) b)

Gold-colored chlorophyll Includes yellow-green algae and goldenbrown algae 3. Phylum Bacillariophyta (Diatoms) a) b)

Produce thin, delicate cell walls rich is silicon the main component of glass Sexually reproduce and asexually reproduce. 4. Phylum Pyrrophyta (dioflagellates) a) b) c)

d) e) are photosynthetic are heterotrophic Have 2-flagella Reproduce asexually Cause of red Tides 5.

Phylum Rhodophyta: (red Algae) a) b) c) d) Lives in deep

water Contains chlorophyll A Multicellular Helps form coral reefs 6. Phylum Phaeophyta

(Brown Algae) a) b) c) d) Marine organisms Live in shallow water

Most complex algae Contains Chlorophyll A and C 6. Phylum Chlorophyta: (green algae)

a) b) c) d) Cell wall Chlorophyll A and B Found in fresh

and marine water Single celled, multi celled, and colonial. C. Fungus Like Protists 1. Phylum Acrasiomycota

(cellular slime molds) a) b) Free-living cells Absorb nutrients from dead/decaying matter

2. Phylum Myxomycota (acellular slime molds) a) Single cell with many nuclei

3. Phylum Oomcota (water Mold) a) b) c) Feed on dead or

decaying matter, Both sexual and asexual reproduction Caused the Potato Famine of Ireland in 1846

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