VOCABULARY LIST 1 - INTRODUCTION

invertebrate
taxon
cellularity
protozoa
metazoa
mesozoa
parazoa
eumetazoa
level of organization
symmetry
asymmetry
spherical
radial
biradial
bilateral
embryology
germ layers
diploblastic
triploblastic
body cavity
acoelomate
pseudocoelomate
eucoelomate
protostome
deuterostome

parasitic
free-living
terrestrial
aquatic
marine
fresh-water
littoral
supralittoral
eulittoral
sublittoral
neritic
oceanic
benthic
epifauna
infauna
psammon
sessile
pelagic
photic
aphotic
abyssal
plankton
phytoplankton
zooplankton
holoplankton
meroplankton
nekton
neuston
estuarine
lentic
lotic