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the phylum whose members have a notochord, a nerve cord, and slits in their throat area at some point in their lives
chordate
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a flexible rod that supports a chordate's back
notochord
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the bones that make up the backbone of an animal
vertebrae
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an animal whose body does not produce much internal heat
ectotherm
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an animal that regulates its own temperature by controlling the internal heat it produces
endotherm
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a tissue that is more flexible than bone
cartilage
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an organ that removes oxygen from water
gill
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an internal gas-filled organ that helps a bony fish stabilize its body at different water depths
swim bladder
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an ectothermic vertebrate that spends its early life in water and its adult life on land
amphibian
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the larval form of a frog or toad
tadpole
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an organ found in air-breathing vertebrates that exchanges oxygen and carbon dioxide with the blood
lung
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an upper chamber of the heart that receives blood
atrium
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a lower chamber of the heart that pumps blood out to the lungs and body
ventricle
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the specific environment in which an animal lives
habitat
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an ectothermic vertebrate that lays eggs and has lungs and scaly skin
reptile
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an organ that filters wastes from the blood
kidney
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a watery fluid produced by the kidneys that contains wastes
urine
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Name 4 characteristics of a chordate.
- vertebrates
- have notochords
- nerve cord in back
- slits in throat area
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This type of fish has no jaw and no scales. Examples are hagfishes and lampreys. What type of fish is it?
jawless fish
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This type of fish has a jaw, scales, and skeletons made of cartilage. Examples are are sharks and rays. What type of fish is it?
cartilaginous fish
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This type of fish has a jaw, scales, gills, and bones. Examples are trout, tuna, and goldfish. What type of fish is it?
bony fish
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How do reptiles conserve water?
- scaly skin- keeps water in their bodies
- kidneys- concentrate urine so that they lose very little water
- amniotic eggs- leathery shell and membranes that keep the embryo moist
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