Protista part 2
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This document describes the characteristics of the kingdom Protista. It discusses the main phyla of algae, including Chlorophyta (green algae), Phaeophyta (brown algae), and Rhodophyta (red algae). It also covers protist phyla like Bacillariophyta (diatoms), Dinoflagellata, and Chrysophyta. The document outlines structural features and key traits of different algal groups. It notes that green algae were important in the evolution of land plants. Fungus-like protists like slime molds, water molds, and chytrids are also briefly covered.
Protista part 2
- 2. Algae
- 3. Characteristics of Algae Autotrophic Not plants – why? Often contain pyrenoids
- 4. Structure of Algae Thallus or body Unicellular or multicellular Colonial: Volvoz Filamentous: Spirogyra Multicellular: Ulva Asexual and sexual reproduction
- 5. Phylums Phylum Chlorophyta Phylum Phaeophyta Phylum Rhodophyta Phylum Bacillariophyta Phylum Dinoflagellata Phylum Chrysophyta Phyla Euglenohyta
- 6. Phylum Chlorophyta Look familiar?
- 7. Continued… Green algae Many different forms Gave rise to land plants – why? Choroplasts that contain a and b cholorphyll Have carotenoids Cell walls of cellulose
- 8. Ulva
- 10. Phylum Phaeophyta Brown algae Marine Seaweed and kelps Cooler areas of ocean Fucoxanthin pigment Store food as laminarin ALL multicellular Stemlike stipe Leaflike region called blade
- 12. Phylum Rhodophyta Red algae but colors vary Marine seaweeds Smaller than brown algae and live in deeper waters Phycobilins – pigment for absorbing light Some coated with polysaccharide carageenan – cosmetics, gel capsules, cheeses Agar – extracted from cell walls of red algae
- 15. Phylum Bacillariophyta Diatoms Shells fit together like a box with a lid Centric and pennate Main component of phytoplankton Diatomaceous earth
- 17. Phylum Dinoflagellata Dinoflagellates Small, unicellular Most photosynthetic Some bioluminescent Red tide a problem
- 20. Phylum Chrysophyta Golden algae Most fresh water Form cysts 2 flagella Carotenoids give color Important for formation of petroleum deposits
- 24. Phylum Euglenophyta Euglenoids Plant-like and animal-like characteristics Many have cholorphyll and are photosynthetic No cell wall, motile Most live in fresh water See picture on page 533
- 27. Fungus-like protists Slime molds: Phylum acrasiomycota Cellular slime molds Amoeboid movement Phylum Myxomycota Plasmodial slime molds Mass of plasmodium Water molds Phylum Oomycota Blight Phylum Chytridiomycota Chytrids Zoospores with one flagellum Maybe fungi?
- 28. Slime molds
- 29. Water molds
- 30. Chytrids
- 31. The END….
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