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chapter 3 ex fish
Term | Definition |
---|---|
1 down ectotherm | And animal whose body dose not produce much internal heat |
endotherm | An animal whose body controls and regulates its temperature by controlling the internal heat it produces |
chordate | The phylum whose members have a notochord,a nerve cord,and slits in their threat area at some point in their lives |
notochord | A flexible rod that supports a chordate's back |
cartilage | A flexible,strong and tissue that is softer than bone |
vertebra | The bones that make up the backbone |
2 down fish | An ectothermic vertebrate that lives in the water and has fins |
swim bladder | Ann internal gas-filled organ that helps a boney fish stabilize its body at different water depths |
buoyant force | The force that water exerts upwardon any underwater object |
3 down atrium | An upper chamber of the heart |
habitat | The specific environment in which an animal lives |
ventricle | The lower chamber of the heart,which pumps blood out to the lungs and body |
amphibian | An ectchermic verte brate that spends its early life in water and its adulthood on land,returning to water to reproduce |
4 down reptile | An exothermic vertebrate that has lung and scaly skin |
urine | The watery fluid in which the wastes produced by animals cells are evceted |
5 down paleontologist | A scientist who studies extinct organism ,examines fossil structure and makes comparisons to present day organisms. |
fossil | The hardend remains or other evidence of a living thing that existed a long time in the past |
sedimentary rock | Rock formed from harden layers of sediments-particles of clay sand mud or silt |