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Marine Biology Unit #6
Multicellular Algae, Porifera and Cnidarians
8
Science
12th Grade
02/26/2008
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Term
Thallus
 Definition
complete body
Term
Blade
 Definition
leaf-like flatten portion
Term
Pneumatocysts
 Definition
gas filled bladders that keep the blades close to the surface
Term
Stripe
 Definition
distinct stem-like structure to provide support
Term
holdfast
 Definition
looks like roots; attaches the thallus to the bottom
Term
chlorophyta
 Definition
simple thallus typically bright green
Term
heterokontophyta
 Definition
largest and most complex; brown
Term
rhodophyta
 Definition
some have become parasites of other seaweed
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