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tissue layers
triploblastic
symmetry
bilateral
cephalization
yes
development
deuterostome
lophotrochozoa / ecdysozoa
neither
body cavity
true coelomate
support strucutre
endoskeleton (cartilage or bone)
segmentation
yes
movement
muscles (walking, flying, swimming)
digestive system
complete
circulatory system
closed
respiratory system
lungs, gills
excretory system
kidney
role in ecosystem
food source, medical, fertilize agriculture, pets
A
muscle segments
B
notochord
C
dorsal, hollow nerve cord
D
muscular, post-anal tail
E
anus
F
pharyngeal slits or clefts
G
mouth