Throughout this lab pay special attention to interrelationships between structure and function. For instance, reproducing is a problem encountered in all three environments.
Support is a special problem on land.
Possible sources include aquariums or pond water. You will observe locomotion in this organism. Be sure you can identify these and understand their functions. Digestion in paramecium is intercellular -it takes place inside the cell. However, in people, digestion is extracellular -although the food is ingested it doesn't enter any cells before it is digested.