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12 Cards in this Set
- Front
- Back
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Backbone |
the main bone, made up of many small bones joined together, that runs along the middle of the back in some animals |
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Exoskeleton |
a hard covering that supports and protects some animals without backbones |
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Molt |
to shed an animal's outer covering |
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Gills |
organs for breathing and found in fish and amphibians |
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Anphibians |
one large group of animals with backbones that live part of their lives in water and part on land |
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Reptile |
an animal with a backbone that has dry, scaly skin |
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Mammal |
an animal with a backbone that usually has hair on its body and feeds milk to its young |
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Behavior |
the way a living thing acts |
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Instinct |
a behavior that an animal is born with and does not need to learn
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Reflex |
a simple, automatic behavior |
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Stimulus |
the cause of a behavior |
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Response |
a behavior caused by a stimulus |
