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