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12 Cards in this Set

  • Front
  • Back
one way two opening digestive tract
annalid and arthropod
intracellular(within the cell wall) digestion
(lysosome)
protozoans
extracellular digestion in gastrovascular cavity
coelenterates
closed simple circulatory system
annalids
diffusion, cyclosis
protozoan/coelenterates
open circulatory system
arthropods
primitives central nervous system, brain composed of fused ganglia
annelids
nerve net
coelenterates
primitive central nervous system; brain composed of fused ganglia. also have specialized snsory organ
arthropods
produce uric acid in malpighian tubules and eliminate it via the rectum
arthropods
ammonia and CO2 diffuse directly into the environment
protozoans and coelenterates
excrete urea through nephridia in the skin
annelids