Classification Kingdom Protista

Algae’s / Seaweeds Multicellular, Plant-Like Protists Autotrophic The algae’s / seaweeds

Algae’s / Seaweeds Division Chlorophyta: Green Algae’s Evidence that land plants evolved from green algae's Contain both chlorophyll a & b, as do land plants Cell walls made of cellulose, like those of land plants

Ulva lactuca Halophila ovalis Tetraselmis Volvox Spyrogyra

Algae’s / Seaweeds Division Rhodophyta: Red Algae’s Phycoerythrins: red in color, allowing them to live much deeper than other algae's Carageenan: emulsifier used in cosmetics, paints, & ice cream

Algae’s / Seaweeds Division Rhodophyta: Red Algae’s Secrete calcium carbonate skeleton that holds coral reefs together

Algae’s / Seaweeds Division Phaeophyta: Brown Algae’s Fucoxanthin: brown algae vary in color, from olive green to dark brown because of this pigment Algin: Thickens & emulsifies dairy & baking goods

Algae’s / Seaweeds Division Phaeophyta: Brown Algae’s Kelp Forests forms the foundation of many temperate coastal ecosystems

Algae’s / Seaweeds Division Phaeophyta: Brown Algae’s Sargassum form huge drifting mats