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Key Terms
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vertebrates
invertebrates
animal
tissues
organs
organ systems
embryos
larvae
choanoflagellates
extracellular matrix
heterotrophs
parasite
detritivore
predator
carnivore
subkingdom
Parazoa
phylum
Porifera
Eumetazoa
symmetry
asymmetrical
Radiata
Bilateria
radially symmetrical
aboral
bilaterally symmetrical
anterior
posterior
cephalization
doral
ventral
hermaphroditic
blastula
gastrula
primary germ layers
diploblastic
ectoderm
endoderm
mesoderm
triploblastic
direct development
larva
metamorphosis
metamorphose
protostomes
deuterostomes
blastomeres
determinate cleavage
indeterminate cleavage
spiral cleavage
radial cleavage
blastopore
anus
coelom
acoelomates
pseudocoelomates
coelomates
ecdysozoans
lophotrochozoans
sponges
Porifera
choanocytes
mesohyl region
amoebocytes
spicules
spongocoel
osculum
sponging
budding
gemmules
Cnidaria
nematocysts
cnidocytes
marine
sessile
gastrovascular cavity
polyp
medusa
cilia
planula
strobila
pneumatophore
hydrostatic skeleton
corals
reefs
dinoflagellates
Platyhelminthes
eversible
pharynx
flukes
oral sucker
scolex
nerve net
chemosensory
auricles
eyespots
protonephridia
excretory system
flame cells
proglottids
Mollusca
mollusks
mantle cavity
mantle
ventrally located
muscular foot
visceral mass
radula
chitinous
bivalves
gastropods
cephalopods
ciliated
trochophore
Annelida
metamerism
oligochaetes
setae
clitellum
polychaetes
parapodia
Hirudinea
annuli
radioles
anticoagulant
closed circulatory system
ventral nerve cord
Nematoda
Caenorhabditis elegans
longitudinal muscles
complete digestive systems
hypodermis
cuticle
Arthropoda
insects
crustaceans
arachnids
pupae
parasitoids
exoskeleton
chitin
appendages
molt
open circulatory systems
hemolymph
hemocoel
spiracles
tracheae
tracheoles
gills
book lungs
Malpighian tubules
solpugids
pectines
maleoli
compound eyes
arthropods
uniramous
biramous
chelicerates
mandibulates
chelicerae
subphylum
Chelicerata
mandibles
Crustacea
Uniramia
pedipalps
cephalothorax
abdomen
mesosoma
carapace
pharynx
silk
spinnerets
myriapods
antennae
Echinodermata
endoskeleton
calcareous
ossicles
test
pentaradial symmetry
pedicellariae
water vascular system
tube feet
ampulla
respiratory tree
cloaca







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