ProtistsDomain: EukaryaKingdom: Protista

Protists are:Single-celled (unicellular) or simple multicellular,

microscopic, eukaryotic (with a nucleus) organisms

(Phytoflagellates):

•Autotrophs (self-nourished)

• Producers - produce their own food from light.

Algae

•Green Algae (7500sp)

•Red Algae (5000sp)•Used in making ice cream

•Brown Algae (1500sp)

Euglena

•Uses its eyespot to sense sunlight

•Moves by 2 flagella (1 short and 1 long)

•Contains chloroplasts to produce food for itself

Eyespot

Chloroplasts

Flagellum

Diatoms•Colorful - Many Shapes•Phytoplankton•Used to make toothpaste, insecticides and dynamite

Dinoflagellates (whirling-whip)

2 Flagella; Cell WallRed Tide

Heterotrophs (other-nourished) that MOVE

ProtozoansProtists that move, but cannot make their own

food

Sarcodines• Pseudopods -extensions of the cell membrane and cytoplasm

• Engulf food particles

• Assist with movement

Amoeba

Radiolarian

Ciliates• Have small, hair-like projections called cilia on the outside of their bodies

• Provide movement

• Act as sensors

• Can help sweep in food

Paramecium

Zooflagellates• Protists that move using a flagellum

• Live in water or within other organisms

• Symbiotic relationship: Termites and wood roaches rely on a type of zooflagellate to digest the wood

Heterotrophs that can’t move

• Slime Molds – Cause of the great potato famine in Ireland; reproduce by spores

• Sporozoans – parasites that feed on cells and body fluids of their host animal

• Reproduce by producing spores

Example: Plasmodium -causes malaria, is transmitted

by mosquitos