| A | B |
|---|
| Animals with a backbone | Vertebres |
| Fish amphibians and reptiles fall under this category which can maintain thier body temperature by their external envirnoment | Ectotherms |
| Animals that control their body temperature with internal processes | Endotherms |
| In ray-finned fishes, a thin-walled sac that can inflate or deflate to regulate buoyancy | Swim Bladder |
| The sensory organs in most fishes that are used to detect vibrations and water currentss | Lateral Line System |
| A close relative of the coelacanth, has lungs as well as gills | Lungfish |
| A vertebrate that is well adapted to life both in water and on land | Amphibian |
| In most vertebrates, a chamber where products of the digestive , excretory, and sometimes reproductive systems empty | Cloaca |
| Jawless fishes most closely resemble the earliest fish from which all other vertebrates may have eveolved. | Agnathans |
| Salamanders belong to the order called? | Urodela |
