| A | B |
| algae | plantlike protists that contain chlorophyll and make their own food |
| ascus | the small, saclike structure in which sac fungi produce spores |
| basidium | the club-shaped, spore-producing structure of club fungi |
| budding | a type of asexual reproduction in which a new organism grows off the side of its parents |
| cilia | short, hairlike structures that extend from the cell membrane and help tiny organisms move |
| protist | members of the Kingdom Protista; some are plantlike, others are animal-like, and others are fungus-like |
| protozoa | one-celled animal-like protists |
| pseudopod | a footlike cytoplasmic extension used by some organisms to move and to trap food |
| red tide | an algal population explosion that causes water to look red and can cause fish kills and illness |
| sporangia | the round spore cases of zygote fungi |
| spore | a reproductive cell that forms new organisms without fertilization |
| hyphae | the mass of many-celled threadlike tubes that form the body of a fungus |
| lichen | an organism made up of a fungus and green algae |