1. Algae Tony Li and Bryan Eng

2. Parts of an alga Thallus: seaweed body Holdfast: anchors the alga Stipe: stemlike part used for support Blade: leaflike, photosynthesis

3. Kelp/Brown Algae All are multicellular. Found in cool water along temperate coasts. Accessory pigments in chloroplasts cause brown color. Uses: food, thickeners for processed foods, lubricants Giant Kelp

4. Red Algae Reddish color: phycoerythrin pigment. Warm coastal waters of tropical oceans, up to 260 m. Carageenan (cell wall): food thickeners. Food. Red algae

5. Green Algae Pigments in chloroplasts similar to those in plants. Most live in fresh water. Both unicellular and multicellular species. Lichen: algae and fungi Volvox Euglena

6. Alternation of Generations n Haploid multicellular organism (gametophyte) n n Gametes Fertilization 2nZygote 2n Mitosis Meiosis n n Spores Mitosis Diploid multicellular organism (sporophyte)

7. YouTube Video http://www.youtube.com/watch?v=uDg4qA4 Nk7Y&feature=related