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ch.4 lesson4
| Question | Answer |
|---|---|
| Chordate | Chordates are a phylum of animals characterized by a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail at some stage of development. |
| Notochord | The notochord is a flexible, rod-like structure that serves as the primary axial support in the embryos of all chordates and plays a key role in signaling during development. |
| Vertebra | Vertebrae are the individual bones that form the vertebral column, providing structural support, protecting the spinal cord, and enabling flexible movement. |
| Ectotherm | An ectotherm is an animal whose internal body temperature is largely determined by the temperature of its surrounding environment rather than metabolic heat productio |
| Endotherm | Endotherms are animals that generate and maintain their body heat through internal metabolic processes, allowing them to regulate a relatively constant body temperature regardless of environmental conditions. |
| List the three characteristics of chordates/vertebrates | Chordates, including vertebrates, are defined by three primary characteristics: a notochord, a dorsal hollow nerve cord, and pharyngeal slits at some stage of development. |
| Describe the between and ectotherm and an endotherm (include animal example) | Ectotherms rely on external heat sources to regulate body temperature, while endotherms produce internal metabolic heat to maintain a stable body temperature regardless of the environment. ectotherms: Turtle endotherm: Fennec Fox |
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