1. Kingdom Protista, Part 2

2. Plant-like Protists (27-1 & 27-2) are classified by COLOR

3. --Are thought to be the ancestors of plants--
Phylum Chlorophyta
have both chlorophyll a and b (so they are green)
have cellulose cell walls
store carbohydrates as starch
have many types of sexual reproduction
exhibit many types of organization
--Are thought to be the ancestors of plants--

4. Variations in Sexual Reproduction
Isogamous= both sperm and egg are motile and equal in size
Anisogamous= both sperm and egg are motile and differ in size
Oogamous= large, nonmotile egg and small, motile sperm

5. Variations in Sexual Reproduction

6. Phylum Chlorophyta organization
1. Unicellular
2. Filamentous
3. Colonial
4. Bi-layer

7. Unicellular Green Algae Chlamydomonas

8. Chlamydomonas

9. Filamentous Green Algae Spirogyra has spiral-shaped chloroplasts

10. another filamentous Green Algae Zygnema 2 Star-shaped chloroplasts per cells

11. a colonial Green Algae … Volvox Mother colony with Daughter colonies
Daughter Colony

12. a bi-layered Green Algae Ulva (sea lettuce)

13. a microscopic view of Ulva
from the side from the top

14. Harvesting Ulva

15. Phylum Phaeophyta brown algae multicellular flagellated sperm cells
Ex.: Fucus & Kelp

16. Phylum Phaeophyta: Brown Algae ex.: Laminaria, Macrocystis, Kelp
Air Bladders:
Used to take blades to the surface for PSN

17. Phylum Rhodophyta: Red Algae
are multicellular
contain red accessory pigments called phycobilins
gametes do not have flagella

18. Phylum Bacillariophyta: Diatoms… have tests (shells) that contain silica (SiO2), or glass

19. Diatom Strew

20. Diatoms - a SEM picture

21. Phylum Dinoflagellata
formerly known as Pyrrophyta or fire algae
have two flagella
some are bioluminescent, producing light
others produce nerve toxins
dinoflagellates are collected and concentrated in filter-feeding animals
people who eat these animals become sick

22. Phylum Dinoflagellata ex. Peridinium

23. Red Tide- results from a bloom of Peridinium

24. Phylum Chrysophyta
Are golden yellow
Have one or two apical flagella

25. Phylum Euglenophyta
have one to three flagella at their leading (apical) end
have thin protein strips called pellicles wrapped over their membranes
have an eyespot that permits them to swim toward light
can become heterotrophic when there is no light

26. Euglena (arrow indicates anterior end)

27. The Euglena uses a flagella as a means of locomotion.