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6th gr Vertebrates
review for test
| Term | Definition |
|---|---|
| Characteristics of Jawless fish | do not have jaws & were the first vertebrates |
| Characteristics of cartilaginous fish | skeletons are make of cartilage, are cold blooded, and must keep swimming |
| Characteristics of bony fish | have a hard skeleton, are cold blooded, and have a swim bladder |
| Characteristics of amphibians | lays eggs with no shell in water, live in water when young, on land as adults, are cold blooded |
| Characteristics of reptiles | have lungs, have hard scales, most lay eggs with soft shells, are cold blooded |
| Characteristics of birds | have feathers, lay eggs, have wings, are warm blooded |
| Characteristics of mammals | mothers feed young milk, are covered in fur or hair, have sweat glands, give birth to live babies, and are warm blooded |
| people, bat, cow, dolphin, dog | examples of mammals |
| robins, geese, ducks | examples of birds |
| snakes, lizards, turtles, crocodiles | examples of reptiles |
| frogs, toads, salamanders | examples of amphibians |
| trout, goldfish, tuna | examples of bony fish |
| sharks, rays, skates | examples of cartilaginous fish |
| hagfish, lamprey | examples of jawless fish |
| habitat loss, overhunting, pollution, exotic species | Why are animals endangered? |
| build parks or reserves, support & pass laws, restore destroyed lands, breed & raise endangered species in zoos, limit hunting of animals, limit pesticides | What can people do to help endangered species? |
| chordate | any animal that at sometime in its life has a large nerve cord running down its back |
| endoskeleton | an internal skeleton |
| cartilage | tissue that is softer than bone but harder than flesh -- the tip of your nose is made of it |
| tetrapods | four footed vertebrates |
| mammary glands | organ in female mammals that produce milk for their young |
| cold blooded | animals that are not able to keep its body temperature constant and warm |
| warm blooded | animals that are able to keep their body temperatures constant and warm |
Created by:
cariherbst
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