click below
click below
Normal Size Small Size show me how
Fish, Amphibians,
| Question | Answer |
|---|---|
| NOTOCHORD | a flexible cord that supports a chordates back |
| characteristics of a CHORDATES? | all chordates have a nerve cord in back, slits in throat area, and a notochord |
| major characteristic of VERTEBRATES | all have a backbone that is part of an endoskeleton |
| vertebrae/vertabra | small similiar bones that form the back bone of vertebrates |
| ECTOTHERMS | animal that does not produce internal heat;body temperature depends on its environment |
| ENDOTHERMS | animals that can produce and regulate its body temperature |
| Endothermic examples | mammals and birds- horses, bears, beavers, walrus, eagles, egrets, owls |
| Ectothermic examples | reptiles and amphibians- snakes, lizards, frogs, salamanders, turtles |
| characteristics of a fish | lives underwater,uses fins to move, has scales, gets oxygen through use of gills |
| reprdoduction of fish | external fertilization |