Multicellular Producers

I. Primary producers A. Capable of using light energy to perform photosynthesis B. Provides energy and oxygen for the rest of planet

II. Multicellular Algae- __________ A. Also called macrophytes or macroalgae B. Numerous types and varied characteristics C. Common General Structure 1. ________ – the body a. filament, leafy, giant kelp b. blades- flattened leaf-like part of the thallus 2. __________ – gas filled bladders that keep blades close to the surface

3. Stipe – stem-like structure that provides support 4. Holdfast- attaches the thallus to the bottom, acts like roots D. 3 types of seaweeds E. ________ algae- most are fresh water and terrestrial 1. In marine environments they are usually in tide pools, estuaries, bays and coasts 2. ex. Sea lettuce, caulerpa F. _________ algae

1. Olive green to dark brown 2. Almost always marine 3. Kelps are the most complex and largest a. grow in dense beds or forests b. individuals can grow up to 330 ft. G. _______ algae 1. more species of red algae then green and brown combined

Sea Lettuce

KELP FOREST

Red algae

H. Reproduction I. Economic importance 1. Asexual- vegetative propagation 2. __________- production of spores I. Economic importance 1. Food 2. Phycocolloids –gelatinous chemical used in food processing 3. Pharmaceuticals 4. Cosmetics

III. Flowering plants A. ___________ B. 250,000 species, but only few live in the oceans C. Roots, stems, leaves and flowers D. Sea grasses- resemble grasses 1. Horizontal stems 2. Pollen is carried on the current

E. ________-marsh plants 1. Called cord grasses 2. Are true grasses 3. Salt tolerant

F. __________ 1. Trees and shrubs adapted to live along shorelines