| A | B |
|---|
| parasite | a protist that invades another organism to get the nutrients it needs |
| producer | a protist that makes its own food |
| decomposer | a protist that breaks down dead organic matter |
| host | a protist that a parasite invades for nutrients |
| heterotroph | a parasite that CANNOT make its own food |
| phytoplankton | this provides most of the world's oxygen |
| diatoms | these have shells that contain a glasslike substance called silica |
| foraminiferans | these snail-like shells |
| macronucleus | this controls the functions of a ciliate's cell |
| cilia | these are tiny, hairlike structures |
| flagella | these are the whip-like strands on dinoflagellates |
| algea | these are protest producers |
| lichen | fungas and algea combine to form |
| mold | shapeless and fuzzy |
| fungus | a eukaryotic heterotroph with rigid cell walls and no chorophyll |
| mycelium | a twisted mass that forms when hyphae grow together |
| hypha | a threadlike fungal fiber |
| spore | a small reproductive cell that is protected by a thick cell wall |
| club fungi | a group of fungi to which mushrooms belong |
| budding | a form of asexual reproduction used by yeasts |
