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animals
animal catergories
11
Biology
Undergraduate 1
11/14/2012

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Term
problems of living
Definition
gas exchange
nutrition
water balance
sensitivity to environment
reproduction
excretion
Term
arthropods
Definition
most diverse animal 81% of diversity
Term
porifera
Definition
assymetrical
no tissues
mostly marine
2 meters large
sessile
Term
cnidrera
Definition
marine
radial symmetric
diploblastic
Term
classes of cnidera
Definition
hydrozoa- hydras
scyphozoa- jellyfish
anthozoa- anomoma and corals
Term
worms
Definition
bilaterial symmetry
motile- can move toward benefits
cephalization- sense organs
front loaded sense organs
Term
platyhelminthes-flatworms
Definition
bilateral symmetry
triploblastic
motile
cephalized nerve cords
dorsal ventral flattened
aquatic
incomplete guy
Term
platyhelmintes classes
Definition
turbellaria- free living
trenetoda- flukes
castoda- tapeworms
Term
nematoda-roundworm
Definition
bilateral
triploblastic
motile
complete gut
longitude muscles
free living or parasitic
Term
ammelida-segmented worms
Definition
bilateral
cephalized
triplioblastic
complete gut
2 cavity- coelom
motile
longitude and circular muscles
segmented
closed circular system
Term
ammelida classes
Definition
polychaeta- aquatic
obilgo claeta- live in barrows
hieudinea- leaches
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