Seaweed

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Seaweed

• By Jina Burke and Mr. Houghton

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Kindom Plantae

• There are five phylum in kingdom Plantae.
• Three of these five phylum are actually algae
  green algae, brown algae and red algae.
• Seaweed is actually algae.

• Characteristics of kingdom Plantae
• they have chlorophyll
• they have a food storage polysaccharide (complex
  sugar)
• they have polysaccharides in their cell walls.

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Seaweeds on this page Left Knotted Wrack
(Ascophyllum nodosum), Bottom left a subtidal
red alga (Kallymenia reniformis). Right a kelp
(Laminaria ochroleuca), Bottom right Sea Lettuce
(Ulva rigida).
Seaweed
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What is seaweed?

• Seaweed is marine and brackish macroalgae.
• They are also known to be saltwater dwelling,
  simple organisms.
• They DO NOT include phytoplantonic organisms.
• Seaweed are photosynthetic and oxygen-evolving.
• Seaweed is not quite plant and definitely not
  animal.

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Why's seaweed not quite a plant?

• Seaweed has no roots or shoots.

It DOES have root-like attachment structures
called holdfasts and leaf-like fronds that act
like shoots.
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Where are they found?

• Seaweed grows on rocky areas or on coral reef.
• They grow where they can still get sunlight
  through the water so that they can preform
  photosynthesis (food)

• Most seaweed is red seaweed HOWEVER in nova
  Scotia brown algae is more common.
• 6000 species are known to be red.

• the second largest algae plylum would be the
  brown algae.
• 2000 species are found here.

• 1200 species of seaweed are green.

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• Seaweed have a very complex way or reproducing
  themselves.
• Seaweed reproduce by spores of some kind
• Seaweed have no seeds, spores may be motile or
  non-motile varies from phylum to phylum, e.g,
  the red and blue green algae are non flagellated,
  algae of other groups usually have two flagella

Reproduction
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USES

• Seaweed can be used as a source of food in many
  maritime countries also for industrial
  applications and as a fertilizer.

• Uses of seaweed's now are as human as foods,
  fertilizers, and for the extraction of industrial
  gums and chemicals.
• They have the potential to be used as a source
  of long- and short chain chemicals with medicinal
  and industrial collectors and potentially useful
  substances may be extracted by fermentation and
  pyrolysis (decomposition)

Bad usage ---gt
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Pictures
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THE END
SEA-YA!!