ALGAE lecture - ALGAE Plant like protist (Chapter 28, pp....

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Unformatted text preview: ALGAE Plant like protist (Chapter 28, pp. 564ff) Tamara Avellan February 24 th 2006 Definition Eukaryotic plant like organisms within the kingdom of PROTISTA. Characteristics:- Autotrophic => Photosynthesis- Cell walls with cellulose- Starch storage- Some are symbiotic Classification Groups and divisions: 1) Euglenozoa a. Euglenoids 2) Alveolata a. Pyrrophyta (Dinoflagellates) 3) Stramenopila a. Chrysophyta (Diatoms) b. Phaeophyta (brown algae) 4) Rhodophyta (red algae) 5) Chlorophyta (green algae) Euglenoids unicellular Ca. 40 genera have chloroplasts autotrophic 10-500 um long, variable shapes (flexible pellicle) Reproduction through mitosis (non-sexual) Euglena Two flagella one long, one short Contractile vacuole for water balance Light sensitive stigma Chloroplasts with chlorophyll a&b, carotenoids Alveolata Pyrrophyta Dinoflagellates Unicellular +1000 species Mainly marine, major phytoplankton Two flagella in grooves perpendicular to each other Chlorophyll a&c, carotenoids Reproduction through fission (rare sexual) Alveolata 2...
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ALGAE lecture - ALGAE Plant like protist (Chapter 28, pp....

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