Mixed Protozoa

What You Might See in The Lab TODAY

AMOEBABlob-like, changes shape

500-1000 um

Move by “amoeboid

movement”

Protist Movie

Amoeba

• Move by pushing a pseudopod of cytoplasm

• Here it is engulfing food

• Amoeboid movement movie

Paramecium

• Protist Movies

• Cilia beat for movement

• Move in a spiral

• Slipper shaped

• 100-350 um long. 

Paramecium Feeding

• Click on Paramecium Bursaria

• Feeding and Cilia

Volvox

• Protist Movie

• Colony of many green protists with flagella that help the ball move

• 100-6000 microns across.

Volvox: Colony Net

Individual volvox

organism

Euglena

• Very small, green • Euglena are 35-55

um long

• Move with flagella

• Protist Movies: Euglena gracilis

See flagella Click on Flagellate

Stentor

• Protist Movies: Stentor roeseli

• Cilia on top of trumpet-shape

Note cilia Cool Cilia Movie

Assorted Algae

HeliozoansProjections out from circular body

Rotifer

Spinning cilia

Three Protozoans:stentor, amoeba, heliozoan

Shelled Amoeba

Good Links

• Pond water critters you can see with a microscope

• Mic-UK [site A]: An overview of microscopic pond life - protozoa, major freshwater groups

• Molecular Expressions Digital Video Gallery: Pond Life

• Protozoa and Photomicrography