| A | B |
|---|
| Planktons | tiny floating organisms |
| phytoplankton | tiny, floating organisms that are photosynthetic and predominantly algae |
| indicator organisms | organisms that grow only with certain materials |
| filament | slender, chain-like thread of cells |
| algae is grouped: | according to pigments |
| holdfasts | special cells that attach algae to submerged objects |
| sessile algae | algae that grows attached to something |
| thallus | algal colony |
| air bladders | small air filled spaces that make the thallus float |
| Unicellular | forms new organisms by mitotic cell division |
| fragmentation | if a colony is disrupted and split in two, each side will grow back into a colony |
| zoospores | individual cells in some sessile algar that are special, which ahve flagella who swim to form new colonies |
| conjugation | two cells that unite that aren't gametes |
| isogametes | special cells, not different. fuse. |
| heterogametes | different cells unite |
| zygospore | protective covering of a zygote (formed in unfavorable conditions |
| ovum | egg |
| oogonuim | structure built around ovum |
| sperm | motile that fertilizes |
| antheridum | structure built around sperm |
