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Lesson3 Invertabrate
| Term | Definition |
|---|---|
| cnidarian | invertebrates that have stinging cells and take the food into the a central body cavity |
| mullosk | invertebrates with soft, unsegmented bodies that are often protected by a hard shell |
| arthropods | invertebrates that have hard outer coverings, soft bodies, and pairs of jointed appendages |
| exoskeleton | outer skekeleton |
| echinoderm | invertebrates that has an internal skeleton and a system of fluid-filled tubes |
| endoskeleton | internal skeleton |