- unicellular & multicellular
- photosynthetic - all have chlorophyll a & many
have chlorophyll c
- 7 phyla - distinguished often by colour (other
pigments) that mask the green of chlorophyll
- alternation of generations (asexual/ sexual,
haploid/diploid)
- classification
link
|
| Cyanobacteria |
|
| Single-celled and
Colonies |
- Kingdom Protista
- float on the surface of water - phyto-plankton
|
|
Yellow-Green |
- unicellular or filamentous
- biflagellate - different lengths, anterior
|
|
Golden |
- unicellular
- chlorophylls a & c
- some have flagella, others are amoeboid, some are non-motile
|
|
Golden-Brown |
- unicellular
- chlorophylls a & c
- most are biflagellate
|
| Multi-cellular |
- Kingdom Plantae
- seaweed & kelp
- have holdfasts to prevent being transported/dislodged
by tides & currents
- pigments reflect the filtering of light
through the water
- different types are found in different areas
& layers/depths of water
- green on surface absorb red (longer
wavelengths)
- red at greater depths absorb blue
(shorter wavelengths)
- found in areas of the ocean that contain
sufficient nutrients (nitrates & phosphates)
- open oceans are virtual deserts,
compared to areas near the shore or where currents carry
dissolved nutrients
|
|
Red |
|
|
Brown |
|
|
Green |
|
...
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