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Stack #1857052
| Question | Answer |
|---|---|
| chordate | The phylum whose members have a notochord, a nerve chord, and slits in their throat area some point in their lives. |
| notochord | A flexible rod that supports a chordate back. |
| vertebra | Small bones that make up the back bone. |
| ectotherm | An animal whose body does not produce much internal heat. |
| endotherm | An animal whose body controls and regulates its temperature by controlling the internal heat it produces. |
| fish | ectothermic vertebrate that lives in the water and has fins. |
| cartilage | Connective tissue that is more flexible than bone and that protects the ends of bones and keeps them from rubbing together. |
| swim bladder | An internal, gas-filled organ that helps a bony fish stabilize its body at different water depth. |
| amphibian | Ectothermic vertebrate that spends its early life in water and its adult life on land. |
| tadpole | LArval form of a frog or a toad. |
| ventricle | Lower chamber of the heart that pumps blood out to the lungs and body. |
| habitat | Specific environment that provides the things an organism needs to live, grow, and reproduce. |
| reptile | Ectothermic vertebrate that lays eggs and has lungs and scaly skin. |
| kidney | Major organ of the excretory system that removes urea and other wastes from the blood. |
| amniotic egg | An egg with a shell and internal membranes that keep the embryo moist. |
| bird | Endothermic vertebrate that has feathers and a four-chambered heart, and lays egg. |
| crop | A birds internal storage pouch that allows it to store food inside its body after swallowing it. |
| gizzard | A muscular, thick-walled part of a birds stomach that squeezes and grinds partially digested food. |
| mammal | An endothermic vertebrate with a four-chambered heart, skin covered with fur or hair, and young fed with milk from the mothers body. |
| mammary gland | An organ in female mammals that produces milk for the mammals young. |
| monotreme | A mammal that lays eggs. |
| marsupial | A mammal that lays eggs. |
| gestation period | The length of time between fertilization and birth of a mammal. |
| placental mammal | A mammal that develops inside it's mothers body until its body system can function independently. |