1. Protists

2. The protist kingdom is sometimes called the “junk drawer” kingdom because it is filled with organisms that don’t fit easily into other kingdoms.
Some protists have one cell and some are many cells
All protists have a nucleus
Can you find my nucleus?
Protist Kingdom

3. Three Types of Protists
Because protists vary, scientists have proposed three ways of grouping protists.
The 3 different types:
Animal-like protists
Plant-like protists
Fungus-like protists

4. Animal-like Protists called protozoans
How are they similar to animals?
They are able to move around and they must consume food. (They cannot make their own food)
How are they different to animals?
They have only one cell

5. Protozoans With Pseudopods
Pseudopods are temporary bulges of the cell membrane that help them move.
Ex: Amoebas

6. See Pseudopods in action…
(Amoeba feeds & Amoeba in motion)

7. Protozoans With Cilia
Cilia are like thin hairs that move in a wavelike pattern.
Cilia move organisms by acting like tiny oars.
Ex: Paramecium

8. See Protozoans with Cilia in action…
(Paramecium eating yeast)

9. Other Protozoans Some protozoans use flagella for movement.
Ex: Euglena
(you-glee-nah)

10. See Flagella in action…
(flagella & cilia)

11. Sporozoans Sporozoans are parasites.
Parasites are organisms who live on or in another organism and harm that organism.
Hosts are the organisms to which the parasites live.

13. Plantlike Protists
Most plantlike protists are called algae.

14. Fungus-like Protists
Fungus-like protists must consume food, and use spores to reproduce.
Spores are tiny cells that are able to grow into a new organism