1. Protists
Mr. Fox 7th Grade Science

2. Protists A group of organisms that don’t fit anywhere else.
Common Characteristics
Cells have a nucleus
All live in moist places

3. 3 Groups of Protists 1. Animal-like protists are called Protozoans
All are heterotrophs, cannot make food
Most can move around
All are unicellular

4. Protozoans Continued Sarcodines move with a pseudopod. Ex: Amoeba
Cilliates – Move about using cillia, hairlike structures on their cell membrane.
Ex: Paramecium
Flagellates – move using a flagella, whip like tail on their cell membrane.

6. Flagellates and Termites
Termite intestines contain Flagellates
Flagellates help them digest wood, termite protects it.
Mutual cooperation , both organisms benefit each other
Called mutualism

7. Protozoans Continued
Sporozoans – All are parasites, they live on other organisms.
Plasmodium is a sporozoan that causes Malaria in humans.

9. Groups of Protists
2. Fungus like protists – are heterotrophs, have cell walls, use spores to reproduce. Can move at some point in their lives.

11. Groups of Protists
3. Plant like protists – commonly called Algae. All are autotrophs. Can be multicellular.
Euglenoids – Green mobile algae. They can be heterotrophs under certain conditions. Usually are autotrophs.

12. Task (possibly homework)
Page 88 and 89. List the other 5 types of algae and a brief description and example.