| A | B |
|---|
| Chlamydomonas | typical green algae that can reproduce sexually or asexually |
| Diatoms | unicellular, photosynthetic algae with silica in highly ornamented shells |
| Type of reproduction in Spirogyra | Two fliaments align sise by side; form conjugation tube; plus gamete moves through tube to minus gamete and fuses into resting spore |
| Reproduction in Oedogonium | Egg (oogonium) & Sperm (antheridium) |
| Reproduction in Ulva | Alternation of generations: Haploid gametophyte and diploid sporophyte |
| In Ulva, the haploid gametophytes look just like: | the diploid sporophyte in Ulva |
| Significance of alternation of generations in some green algae: | Plants (presumed to have evolved from green algae) have alternation of generations |
| Plant alternation of generations: | sporophyte and gametophyte do not look alike and gametes formed in multicellular rather than unicellular gametangia |
| Green Algae | Contains pigment chlorophyll |
| Brown Algea | Contains pigment fucoxanthin |
| Red Algae | Contains pigments Chlorophyll a & b and phycobilins |
| Golden Brown Algae | Contain chlorophyls a and c and fucoxanthin |
| Dinoflagellates | responsible for a phenomenon called red tide or bioluminesescenced |
| Euglenophyta | Contain chlorophyll a & b and can be heterotrophic in the dark |
| Chlorophyta | Unicellular, collonial, fillamentous or thalloid algea |
| Phaeophyta | Usually large, multicellular brown algae |
| Chrysophyta | Golden brown algae they majority of which are called diatoms |
| Pyrrophyta | fire algae or dinoflagellates; usually marine and photosynthetic |
| noctiluca | light producing pyrrophyta |
| Thallus | body of an alga |
