1. Plant-like Protists Phytoplankton All are photosynthetic Sessile algae
Are classified according to their unique characteristics

2. Phytoplankton We will study 2 plant-like protists:
Euglena (flagellate)
Spirogyra (sessile algae)

3. Euglena Euglena gracilis Division Euglenophyta
Movement – use of flagellum
- can also move by changing it’s shape in a process called “euglenoid” movement

4. Euglena Food – Photosynthetic 6CO2 + 6H2O C6H12O6 + 6O2
Euglena can switch to being heterotrophic if they can’t find any light (now that’s cool!)

5. Euglena Reproduction – Asexual binary fission Special Structures
Flagellum – locomotion
Chloroplasts – site of photosynthesis
Eye spot – light sensitive pigment

6. Euglena

7. Spirogyra Spirogyra ternatum Division Chlorophyta Movement – sessile
Food – Photosynthesis
(You write the equation)

8. Spirogyra
Reproduction – filaments of spirogyra line up and connect with conjugation tubes.
All the contents of the donor cell pass through the tube into the recipient cell
The donor cell is now a dead, empty cell
Since the filamentous cells are considered haploid (n), the recipient cell is now considered a zygote (2n)

9. Conjugation continued
The zygote becomes protected by a Zygospore
Eventually the zygote divides by meiosis to produce more haploid cells

10. Spirogyra Special structures Conjugation tube Spiraling chloroplast
Zygote
Zygospore

12. Spirogyra

13. Other Phytoplankton
Volvox – Division Chlorophyta

14. Other Phytoplankton
Diatoms – Division Chrysophyta

15. Mycoplankton Fungus-like Protists Slime molds Colonial organisms
Terrestrial decomposers

16. Slime Molds