2. Complex Algae

3. w Complex algae are divided into three groups according to their photosynthetic pigments: green, brown, and red. w Complex algae live at different depths of water based on the penetration of light colors into water. w White light colors are: red – orange – yellow – green – blue – violet.

5. Green Algae – Phylum Chlorophyta

6. Chlamydomonas

7. Volvox – a colonial protist

9. Spirogyra

10. Ulva

11. Chara w Land plants are thought to have evolved from some extinct green alga that resembles Chara

12. Brown Algae –Phylum Phaeophyta

13. Fucus

14. Kelp

15. Red Algae – Phylum Rhodophyta

16. Scinaia furcellata

17. Review w Green algae have chlorophylls a and b w Brown algae have chlorophylls a and c w Red algae have chlorophylls a and d w What do all algae have in common? w Why do complex algae live at different depths of water? w Land plants are thought to have evolved from a green alga, why?