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Chapter 4 Lesson 4
| Term | Definition |
|---|---|
| Chordate | An animal that has a notochord, a nerve cord, and throat pouches at some point in it’s life |
| Notochord | A flexible rod that supports a coordinates back just below the nerve cord |
| Vertebra | The bones that make up the backbone of an organism. In humans, one of the 26 bones that make up the back bone |
| Ectotherm | An animal whose body temperature is determined by the temperature of its environment |
| Endotherm | An animal whose body temperature is regulated by the internal heat, the animal produces. |
| List the three characteristics of coordinates/vertebrates | a notochord, a nerve chord, and a pouch near the throat |
| Describe the difference between an ectotherm and an endotherm include animal example | Endotherms (birds, mammals) have high energy needs, whereas ectotherms (reptiles, fish) have low metabolic rates and require less food. |