1. STRUCTURE AND FUNCTION IN PROTISTS

2. Amoeba proteus: formation of pseudopods

3. Cilia: hair-like structures which aid movement and help to produce water currents which bring food to the organism

4. Cilia aid in movement

5. Stentor uses cilia around the oral groove to pull food into the food vacuole

6. The oral groove of the Paramecium

7. Phagocytosis in the Amoeba

8. Probing for food

9. Euglena is especially interesting since it is green and photosynthetic and has flagella

10. The contractile vacuole is a structure which helps the organism remove excess water from its body

11. Some have a proboscis, like an elephants trunk, which helps in capturing prey.

12. Some protists have shells; this one is extending pseudopods from its shell (test)

13. Vorticella has a stalk which can contract to move it rapidly away from a disturbance.

14. Bursaria are easy to identify because of their unusual shape

15. Didinium has a horse-shoe shaped nucleus; also note the cilia and other organelles.

16. Reproduction

17. Some protists form colonies like these algae

18. Single celled or multi-celled? The volvox is a colonial organism. Here we see daughter cells before they burst out of the mother to become independent colonies of their own.

19. diatoms

20. Trypanasoma: note the blood cells

21. Spirogyra

22. The Hay Infusion