Protists are free living.
parasitic
parasitic
parasitic
parasitic
Free-Living
free living
Most mollusks are free-living but there are a few that are parasitic.
The contractile vacuole allows free-living protists to expel extra water
free-living! We don't live on or in other organisms.
free-living! We don't live on or in other organisms.
Organisms can be grouped as free-living or parasitic. A parasite is an organism which lives in or on another organism, from which it obtains its food. Since humans do not do this they are not parasitic, and so must be free-living.
The contractile vacuole allows free-living protists to expel extra water