1. Seaweed !

3. What is seaweed? Multicellular algae Kingdom Protista
Primary producers
chlorophyll to transform light energy from the sun into chemical energy

4. Observe seaweed and land plant… what are differences. Similarities
Observe seaweed and land plant… what are differences? Similarities? (use a Venn Diagram)

5. How are seaweeds different from plants?

6. Differences Land Plants Seaweed Roots YES No roots, holdfasts
Nutrients
From roots
Through cells, surrounding water
Support
Vascular System
Hydrostatic
Water
Fresh
Salt

7. How would you classify seaweed?

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

9. Green algae (Chlorophyta)
Pigments: Chlorophyll
Fresh water, Brackish water, and coastal waters
Only 10% of species are marine
Ulva

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

11. Examples of Chlorophyta
Neomeris
Cladophoropsis

12. Brown Algae (Phaeophyta)
Pigment: chlorophyll AND additional colors to make it brown
Dominate colder region coastlines
Size: small and delicate to large and thick
Kelp

13. Examples of Phaeophyta
Laurencia
Sargassum
Padina
Dictyoda

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

15. Red algae (Rhodophyta)
Pigments: chlorophyll AND red or blue
Dominant algae in the tropics, grow in all oceans
Deepest depths
Red > Green + Brown
Pterocladia

16. Examples of Rhodophyta
Liagora
Galaxaura

17. Examples of Rhodophyta
Gracilaria (Ogo)

18. Examples of Rhodophyta
What type of marine animal does this look like?
Encrusting
Branching
Coralline

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

20. Invasive Seaweed

21. Uses of Seaweed
How do you think people use seaweed?