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Protist Notes

2. Protists Eukaryotes (have nucleus)
Most unicellular (made of only 1 cell)
Many kinds

3. I. Animal-Like Protists (Protozoans)
Heterotrophs (can’t make own food)
Most able to move around
Unicellular
Types:

4. Protozoan with Pseudopods (Sarcodines)
Pseudopod – “false foot” or bulge of cytoplasm used to move/feed
Example: Amoeba

5. 2. Protozoans with Cilia (Ciliates)
Cilia – hairlike projections that move like waves, used to move or get food
Example: Paramecium

6. 3. Protozoans with flagella (flagellates)
Flagella – long, whiplike “tail”
Symbiosis – relationship where at least one partner benefits
Mutualism – relationship when both partners benefit
Parasite – relationship when one partner harms another (its host)

7. 4. Protozoans that are parasites
Feed on the cells/body fluids of their host

8. II. Plantlike Protists Autotrophs (make own food using sun’s energy)
Algae
Important food source
Contribute oxygen
Many pigments (chemicals that produce color)

9. 1. Diatoms
Unicellular
Dead used as
Polish
Scouring
insecticide

10. 2. Dinoflagellates
Unicellular
2 flagella
Some glow in dark

11. 3. Euglenoids
Green
Heterotrophs when no sun
Example: Euglena

12. 4. Volvox
Volvox are round
They live in colonies
autotrophic

13. 5. Green Algae
Most unicellular
Found in water or land

14. 6. Brown Algae Most seaweeds Color: green, yellow, orange, or brown
Live in water
Some used as food

15. 1. Slime molds
Bright colors
Vary in size
Ooze

16. 2. Water mold/downy mildew
Live in water/moist places
Example: water mold that killed Irish potato crops (1845, 1846)