Brown Algae

Card Set Information

Author:
DesLee26
ID:
261938
Filename:
Brown Algae
Updated:
2014-02-15 08:48:02
Tags:
Plant Kingdom
Folders:
Biology
Description:
Mickle
Show Answers:

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  1. Structure
    • Marine
    •  
    • Macroscopic
    •  
    • Many can be filamentous with branches
    • None are unicellular or colonial; all are multicellular
    •  
    • Those with holdfasts are very large
    •  
    • expanded thallus:
    • -          Blade
    • -          Stipe
    • -          Meristematic region
    • -          Holdfast
  2. Storage food
    • Stores laminarin
    • and mannitol is the primary carb that is translocated
  3. Location
    • Many are in the shallow intertidal zones between high and low tide
    •  
    • Others float freely in the open ocaean

    many observed around rocky shores
  4. Adaptations
    air bladders
  5. Life Cycle
    • Diplobiontic (alt of gen)
    •  
    • Haplobiontic, diploid
    •  
  6. Pigments
    • Chlorophyll a and c
    • Carotenoids, such as Fucoxanthin 
  7. Cell wall
    In cell wall, there is focoidon, which has sulfur
  8. Reproduction
    receptacles
  9. Human Relevance
    Algin used for a food thickener, emulsifier, etc. (sources are laminaria,, aschphyllum, and macrocystus); it keeps the cell wall from drying out 

    • Fire-suppressant bricks
    • Fertilizer and livestock food
    • Direct food source (laminaria [kombu] 
    • Kelp= iodine rich 
    • Iodine supplier 
    • Primary food source

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