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| a member of the animal Phylum Chordata that has a notochord, a hollow dorsal nerve chord, and gill slits at some time in its life cycle. |
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| a flexible, rod-like structure along the dorsal side (back) of a chordate animal, the backbone in invertebrates. |
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| a bundle of nerve that lies above the notochord in a chordate animal; the spinal chord in most invertebrates. |
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| paired openings in the throat; in fish, they develop into gills for breathing underwater. |
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| the internal skeleton of an organism that supports and protects the internal organs and provides a frame for muscles. |
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| describes animals whose body temperature varies with the temperature of its surroundings. |
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| describes animals whose body temperature varies with the temperature of its surroundings. |
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| a cold-blooded vertebrate whose gills,fins, and scales adapt it to living in water. |
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| fan-like structures on fish; adapted for steering, balancing, and moving in water. |
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| hard, than, overlapping plates that cover and protects a fish's body. |
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| a thick, tough, smooth, flexible tissue that is harder than flesh but softer than bone-like (ex. part of your ear);it covers the ends of bones to allow movement and cushion shock. |
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| an organism that kills and eats prey to obtain energy. |
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| an organism that is eaten by a predator. |
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a cold-blooded vertebrate whose permeable skin, strong skeleton, and hibernation or estivation abilities adapt it to life in water and on land
(ex. frogs, toads, and salamanders) |
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| an adaptation for winter survival during which an animal becomes inactive and all body processes slow down. |
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| in adaptation for survival in hot, dry weather during which an animal becomes inactive and all body processes slow down. |
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| organisms that reflect the condition of the environment. |
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| a cold-blooded invertebrate that has dry, scaly skin and lays eggs covered with a leathery shell. (ex.lizards, snakes, and turtles) |
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