| Vocab Term | Definition |
| cnidarian | invertebrate with poison stingers on tentacles |
| endoskeleton | internal supporting structure of an echinoderm - often has many protective spines |
| echinoderm | spiny-skinned invertebrate |
| mollusk | soft bodied invertebrate |
| arthropod | invertebrate with jointed legs and a sectioned body |
| exoskeleton | hard skeleton on the outside of an arthropod's body |
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Science Vocab 147928
