| A | B |
|---|
| protozoan | an animal-like protist |
| pseudopod | a "false foot" or temporary bulge of the cell membrane used for feeding and movement in some protozoans |
| contractile vacuole | the cell structure that collects extra water from the cytoplasm and then expels it |
| cilia | the hairlike projections on the outside of cells that move in a wavelike manner |
| symbiosis | a close relationship between two organisms in which at least one of the organism benefits |
| mutualism | a type of symbiosis in which both partners benefit from living together |
| spore | a tiny cell that is able to grow into a new organism |
| algae | a plantlike protist |
| pigment | a colored chemical compound that absorbs light, producing color |
| red tide | an algal bloom that occurs in salt water |
| lichen | the combination of a fungus and either an alga or an autotrophic bacterium that live together in mutualistic relationship |
