1. There is no such thing as a typical protist!
Kingdom Protista
There is no such thing as a typical protist!

2. What are Protists?
Protists are single and multicellular organisms that are plant-like, animal-like and fungi-like. They evolved from bacteria and represent the intermediate step in the evolution of the other three kingdoms.

3. Some scientists think that animals and plants evolved from colonial protists like this one.

4. Protist Characteristics
heterotrophic or autotrophic, motile or non motile.
But all are Eukaryotic!
There are three kinds of protists

5. Animal-like Protists (Protozoa)
Important because they represent a bridge between bacteria and modern animals.
Amoeba
Pseudopods

6. 1. Animal like protists can move by using Cilia and flagella to catch their food.

7. Flagella
Some can cause disease. This trypanosome causes African Sleeping Sickness. It is carried by the Tse-Tse fly.

8. Malaria is causes by a protista carried in the mosquitoes salivary gland and is associated with environments with large amounts of stagnant water.

9. Plant-like Protists (Algae) -
* Most important organism to life on Earth for their photosynthetic products.

10. 2. Plant like Protists are known as algae
2. Plant like Protists are known as algae. They use chloroplasts to make food from the sun.
Ex. Kelp, diatoms, Euglena, red, green, and brown algae

11. Diatoms

12. Fungus-like Protists
Vital to all life for their role as decomposers in an ecosystem.

13. 3. Fungus Like Protists absorb their food like a fungus does
3. Fungus Like Protists absorb their food like a fungus does. They are mostly decomposers and help the ecosystem recycle dead plants and animals.
Ex Slime Molds, water molds and downy mildews.