| Term | Definition |
|---|
| vertebrate | an animal with a backbone |
| invertebrate | an animal without a backbone |
| symmetry | the way an animal's body parts match up around a point or central line |
| cnidarian | an invertebrate with poison stingers on tentacles |
| mollusk | a soft-bodied invertebrate |
| echinoderm | a spiny-skinned invertebrate |
| endoskeleton | an internal supporting structure |
| arthropod | an invertebrate with jointed legs and a body that is divided into sections |
| exoskeleton | a hard covering that protects an invertebrate's body |
| cold-blooded | said of an animal that cannot control its body temperature |
| warm-blooded | said of an animal with a constant body temperature |
| amphibian | a cold-blooded vertebrate that spends part of its life in water and part of its life on land |
| reptile | a cold-blooded vertebrate that lives on land and has a backbone, an endoskeleton, and waterproof skin with scales or plates |
| mammal | a warm-blooded vertebrate with hair or fur; females produce milk to feed their young |
Combine with other sets
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