| A | B |
| alga | a microscopic, multicellular, primitive plant type |
| brown alga | multicellular alga that contains a brown pigment |
| red alga | multicellular alga that contains red pigment |
| green alga | multicellular alga that contains green pigment |
| pigment | colored chemical |
| nonvascular | plant lacking transportation tubes that carry food and water |
| vascular | plant containing tiny tubes to transport water and food |
| autotroph | organism that can make its own food |
| chlorophyll | green substance needed for photosysnthesis |
| producer | organism that can make its own food |