| A | B |
| protist | organism belonging to kingdom Protista |
| funguslike protist | obtains food from dead organic matter or from body of another organism |
| parasite | organism that feeds on another living creature, usually without killing it |
| host | organism on which a parasite lives |
| algae | protist that converts the sun's energy into food |
| phytoplankton | microscopic photosynthetic organism that floats near the ocean's surface |
| protozoa | animal-like protist that are single-celled consumers |
| fungus | organism in the kingdom Fungi |
| hyphae | chains of cells that make up multicellular fungi |
| mycelium | twisted mass of fungal hyphae that have grown together |
| spore | small reproductive cell protected by a thick wall |
| mold | shapeless, fuzzy fungus |
| lichen | combination of a fungus and an alga in a symbiotic relationship |