Chapter+5

Return to Marine Biololgy =Chapter 5=

__Prokaryotes__ Bacteria/Cyanobacteria (blue-green algae) [|Here is a good page]

__Unicellular Algae__ [|Here is a good page]

Diatoms [|Here is a good page]

Dinoflagelattes [|Here is a good page] Zooxanthellae [|Here is a good page]

__Protozoans__ (unicellular and animal-like)

Foraminiferans

Radiolarians

Ciliates [|Here is a good page]

Rotifers - (very small animals/not a protist) are multicellular animals less than 1000 cells [|Here is a good page]

__Seaweeds or Multicellular Algae or Macrophytes__ http://waynesword.palomar.edu/algae1.htm Structure:
 * are protists, not plants
 * have spores instead of seeds
 * don't have flowers
 * lack true leaves, stems, and roots of the higher plants
 * complete body – thallus
 * leaf-like flattened portions – blades
 * stem-like structures – stipe
 * structures that look like roots – holdfast
 * gas filled bladders - pneumatocycts

Classifications of Algae: Based on the different types of Chlorophyll

Green Algae: http://oceanlink.island.net/oinfo/seaweeds/Chlorophyta.html
 * Sea lettuce and dead man's fingers
 * has the same type of chlorophyll as true plants
 * have cellulose cell walls
 * few marine species, but these can be abundant

__Brown Algae:__ http://oceanlink.island.net/oinfo/seaweeds/Phaeophyta.html
 * kelps and rockweeds
 * green and brown chlorophylls
 * biggest and most complex
 * found in the Sargasso Sea
 * source of algin an emulsifier

__Red Algae:__ http://oceanlink.island.net/oinfo/seaweeds/Rhodophyta.html
 * Irish moss and porphyra (nori)
 * red pigment (phycobilins) mask color of chlorophyll
 * live the deepest
 * largest group
 * some help in coral building
 * source of agar and carrageenan, both of which are emulsifiers