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annelida (characteristics (triploblastic, coelomates, protostoma,…
annelida
characteristics
triploblastic
coelomates
protostoma
digestive tract
closed circulatory system
metanephridia
trochophore larvae
lateral epidermal chetae
hirudinoideans
leeches
no parapodia or chaete
anterior and posterior suckers
clitellum
hermaphroditic
scavengers
locomotion
suckers move body
poor support
5 regions
appearance
vermiform
some highly aberrant
cylindrical
segmented
bilateral
cephalization
segmented
segmentation
internal and external parts identical in each segment
metamerism
polychaetes
marine worms
parapodia
unjointed appendages
bundles of chatea
biramous
notopodium
neuropodium
primitive
chaete
spine like structures
paired coelom
crawl with wave motion
reproduction
trocophore larvae
epytoky
oligochaetes
earthworms
clitellum
modified segments
secretory region
reproduction
mucous glands
internal similarities to marine
hermaphroditic
crawl with chaete
bauplan
head
presegmental
protostomia
contains brains
periosteum
surrounds mouth
trunk
external annuli
internal coelomic cavities
pydigium
post segmental
bears anus
body types
homonomous
each segment is the same
heteronomous
specialized segments
primitive/derived
primitive
each segment contains portions of each system
homo
derived
highly modified, fused segments
hetero