What is seaweed? zMulticellular algae zKingdom Protista zPrimary producers ychlorophyll to transform light energy from the sun into chemical energy.

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Presentation transcript:

What is seaweed? zMulticellular algae zKingdom Protista zPrimary producers ychlorophyll to transform light energy from the sun into chemical energy

How are seaweeds different from plants?

Differences Land PlantsSeaweed RootsYESNo roots, holdfasts NutrientsFrom rootsThrough cells, surrounding water SupportVascular SystemHydrostatic WaterFreshSalt Tissue typesSeveralOne

How would you classify seaweed?

Did you know…. zThere are 3 main types of seaweed?  Chlorophyta (Green algae)  Phaeophyta (Brown algae)  Rhodophyta (Red algae)

Green algae (Chlorophyta) zPigments: Chlorophyll zFresh water, Brackish water, and coastal waters zOnly 10% of species are marine Ulva

Examples of Chlorophyta Halimeda Calcareous green algae helps in coral reef growth.

Examples of Chlorophyta Neomeris Cladophoropsis

Brown Algae (Phaeophyta) zPigment: chlorophyll AND additional colors to make it brown zDominate colder region coastlines zSize: small and delicate to large and thick Kelp

Examples of Phaeophyta Sargassum Padina Laurencia Dictyoda

Examples of Phaeophyta (Kelp) Laminaria Nereocystis Macrocystis How tall would you be if you grew 20 inches per day?

Red algae (Rhodophyta) zPigments: chlorophyll AND red or blue zDominant algae in the tropics, grow in all oceans zDeepest depths zRed > Green + Brown Pterocladia

Examples of Rhodophyta Liagora Galaxaura

Examples of Rhodophyta Gracilaria (Ogo)

Examples of Rhodophyta Coralline EncrustingBranching What type of marine animal does this look like?

And even more examples! Chondrus - Irish Moss Botryocladia Amansia Would you consider boiling one of these to make pudding?

Invasive Seaweed

Uses of Seaweed z How do you think people use seaweed?