Protista part 2 algae
- 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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