| 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 from the cell |
| 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 organisms 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. |
| alga | A plantlike protist. |
| pigment | A colored chemical compound that absorbs light, producing color |
| algal bloom | The rapid growth of a population of algae |
| red tide | An algal bloom that occurs in salt water |
| eutrophication | The buildup over time of nutrients in freshwater lakes and ponds that leads to an increase in the growth of algae |
| hypha | One of many branching, threadlike tubes that make up the body of a fungus |
| fruiting body | The reproductive hypha of a fungus |
| budding | A form of asexual reproduction in which a new organism grows out of the body of a parent |
| lichen | The combination of a fungus and either an alga or an autotrophic bacterium that live together in a mutualistic relationship |
