Photo by: http://gakuranman.com/anglerfish-ovary-microscopic-photography/

•An eukaryotic organism that is not a

plant, animal, fungus or bacteria.

•Most protists are unicellular and live

in water

•Usually motile (able to move)

•Heterotrophic – must consume food

•Examples: amoeba, paramecium

•Classified (grouped) by how they move

Animal-Like Protists

•Move using a flagella

http://www.youtube.com/watch?v=t6DSmymMjoA

•Move using cytoplasmic extensions

• called pseudopodia (“false feet”)

•Movement is also called ameboid

movement

The word “amoeba” means “to change”.

Their cytoplasm is always moving, they

never look the same.http://www.youtube.com/watch?v=Aa0cvmsD_2Q

See: Ameba Coloring

•Protists that move using cilia

•Cilia are tiny hair-like extensions

•Ex: Paramecium

http://www.youtube.com/watch?v=bFRoZpIAuyk

http://www.youtube.com/watch?v=9Ynm5ZOW59Q

http://youtube.com/v/l9ymaSzcsdY

•Paramecium join and

exchange DNA

•Then, they divide (mitosis) and

the offspring are different from

the original parent

•This is a form of reproduction

What are the common names for these protists?

1. ____ Kingdom that an ameba

belongs to

2. ____ Extensions of cytoplasm

3. ____ How a paramecium moves

4. ____ Sexual reproduction in

paramecium

5. ____ Removes excess water

6. ____ A protist that changes

shape

A.Contractile vacuole

B.Pseudopodia

C.Conjugation

D.Amoeba

E.Cilia

F.Protista

1. Mouth Pore

2. Contractile Vacuole

3. Micronucleus

4. Macronucleus

5. Anal Pore

http://www.youtube.com/watch?v=9Ynm5ZOW59Q

Protists are primarily classified according

to how they obtain nutrition:

• Animal-like—heterotrophs

(eat other organisms)

• b. Plant-like—autotrophs

They contain chloroplasts

and make their own food

(photosynthesis).

• Fungus-like—

Decomposers/Heterotrophs

Didinium

Paramecium

eating

Green like plants!

Water mold

Plant-like Protists

Euglena:

Nucleus

Contractile

Vacuole

Chloroplas

ts

Flagell

a

Eyespo

t

For photosynthesis

(light)

• Unicellular Algae:

• Phytoplankton provides a source of nourishment for

other organisms

Fungus-like Protists:

Examples—

a. Slime molds

b. Water molds