asymmetrical
Sponge Symmetry
none
sponge tissue organization
spongocoel
sponge: type of body cavity
osculum
sponge digestive opening
none
sponge respiratory organs
none
sponge excretory system
none
sponge locomotion
spicules embedded in spongin
sponge support system
none
sponge segmentation
none
sponge appendages
none
sponge nervous system organization
radial
hydra symmetry
diploplastic
hydra tissue organization
gastrovascular
hydra body cavity
one
hydra digestive openings
aquatic
hydra habitat
none
hydra respiratory organs
none
hydra excretory system
not in polyp state, some Cnidarians swim in medusa state
hydra locomotion
none
hydra support system
none
hydra segmentation
tentacles
hydra appendages
nerve net
hydra nervous system
bilateral
Planarian symmetry
triploblastic
Planarian tissue organization
acoelomate
Planarian body cavity
mouth (pharynx extended during feeding)
planarian digestive openings
none
planarian circulatory system
aquatic
planarian habitat
none
planarian respiratory organs
protonephridia/flame bulb
planarian excretory system
crawl
planarian locomotion
none
planarian support system
none
planarian segmentation
none
planarian appendages
brain/ventral nerve cords
planarian nervous system
bilateral
earthworm symmetry
coelomate
earthworm body cavity
mouth/anus
earthworm digestive openings
hearts/blood vessels
earthworm circulatory system
moist soil
earthworm habitat
moist skin
earthworm respiratory organs
metanephridia on each segment
earthworm excretory system
peristalsis with logitudina; and circular muscles
earthworm locomotion
coelomic fluid acts as hydrostatic skeleton
earthworm support system
yes
earthworm segmentation
setae
earthworm appendages
brain/ventral nerve cord
earthworm nervous system organization
bilateral
clam symmetry
coelomate – pericardial cavity
clam body cavity
mouth/anus
clam digestive openings
heart/open c.s.
clam circulatory system
aquatic
clam habitat
incurrent and excurrent siphon, gills
clam respiratory organs
nephridia
clam excretory system
muscular foot
clam locomotion
shells
clam support system
no
clam segmentation
muscular foot
clam appendages
three ganglia
clam nervous system
bilateral
roundworm symmetry
triploblastic
roundworm tissue organization
pseudocoelom
roundworm body cavity
mouth/anus
roundworm digestive openings
none
roundworm circulatory system
various, ascaris is parasitic
roundworm habitat
none (anaerobic)
roundworm respiratory organs
lateral lines
roundworm excretory system
crawl with muscle fibers
roundworm locomotion
hydrostatic skeleton
roundworm support system
none
roundworm segmentation
none
roundworm appendages
dorsal/ventral nerve cords
roundworm nervous system organization
bilateral
Crayfish symmetry
triploblastic
Crayfish tissue organization
coelom (pericardium)
Crayfish body cavity
mouth/anus
Crayfish digestive openings
open: heart/arteries/no veins
Crayfish circulatory system
aquatic
Crayfish habitat
gills
Crayfish respiratory organs
green glands
Crayfish excretory system
ten walking legs; swimmerets
Crayfish locomotion
exoskeleton
crayfish support system
head/thorax/abdomen
Crayfish segmentation
ten walking legs, swimmerets, two pairs of antennae, telson, uropods
Crayfish appendages
simple brain, ventral nerve cords
Crayfish nervous system
bilateral
Grasshopper symmetry
triploblastic
Grasshopper tissue organization
coelom (hemocoel)
Grasshopper body cavity
mouth/anus
Grasshopper digestive openings
open. heart + arteries
Grasshopper circulatory system
terrestrial
Grasshopper habitat
spiracles, tracheae
Grasshopper respiratory organs
malpighian tubules
Grasshopper excretory system
six legs, four wings
Grasshopper locomotion
exoskeleton
Grasshopper support system
head/thorax/abdomen
Grasshopper segmentation
six legs, four wings, antennae
Grasshopper appendages
simple brain/ ventral nerve cord, segmental ganglia
Grasshopper nervous system
bilateral larvae, radial adult
sea star symmetral
triploblastic
sea star tissue organization
coelom
sea star body cavity
mouth/anus
sea star digestive opening
water vascular system operates hemal system
sea star circulatory system
marine
sea star habitat
skin gills (dermal branchiae)
sea star respiratory organs
skin gills
sea star excretory system
tube feet
sea star locomotion
endoskeleton
sea star support system
none
sea star segmentation
five arms
sea star appendages
radial nerves, nerve ring
sea star nervous system organization
bilateral
Lancelet (amphioxus) – symmetry
triploblastic
Lancelet (amphioxus) – tissue organization
coelom
Lancelet (amphioxus) – body cavity
mouth/anus
Lancelet (amphioxus) – digestive openings
closed: arteries, capillaries, veins
Lancelet (amphioxus) – circulatory system
marine
Lancelet (amphioxus) habitat
skin gills
Lancelet (amphioxus) respiratory organs
skin, gill slits mostly for feeding
Lancelet (amphioxus) excretory system
segmental muscles
Lancelet (amphioxus) locomotion
notochord
Lancelet (amphioxus) support system
muscles
Lancelet (amphioxus) segmentation
tentacles/tail
Lancelet (amphioxus) appendages
dorsal nerve cord
Lancelet (amphioxus) nervous system
