| A | B |
| Photosynthesis | plants make own food using energy from the sun |
| chlorophyll | primary pigment in algae and plants; found in cholorplasts |
| pytoplankton | one-celled algae |
| diatoms | one-celled algae and have two halves |
| carotenoids | make diatoms appear golden yellow |
| dinoflagellates | plant-like protists with one cell and two flagella at right angles |
| blooms | population explosions (reproducing in great numbers) |
| red tides | blooms of the dinoflagellates |
| Euglenoids | one celled; no cell wall; have an eyespot |
| Chrysophytes | get their yellow color from caratenoids; |
| Brown algae | of the phylum Phaeophyta and a pigment called fucoxanthin |
| fucoxanthin | brown pigment |
| kelp | have a bulblike structure called a bladder filled with air |
| Volvox | form colonies that look like a hallow ball; live in colonies |
| cytoplasm geletin strands | holds the colonies of Volvox together |
| phycobilins | red pigment of the red algae that helps absorb light |
| fragmentation | green algae break into pieces; each piece is a new individual |
| alternation of generations | life cycle of algae that takes two generations to complete |
| haploid generation | gametophyte generation; produces gametes |
| zygote | formed by gametes from two individuals |
| sporophyte | what the zygote develops into |