Test 12-22

admin / January 22, 2018
Question Answer
Vertebrate An Animal with a backbone made of vertebrae, or sometimes, cartilage
Chordate Animals which AT SOME POINT in their lives had a notochord, a nerve cord, and pharyngeal slits
Cartilage Flexible, strong, connective tissue (A few vertebrates have this as a backbones rather than bone)
Endoskeleton Internal skeleton that supports and protects the body, gives it shape, and provides a place for muscles to attach
Ectotherm An animal whose body temperature does not maintain a steady temperature on its own. These animals temperatures' go up and down depending upon the temperature of their environment. Ex: lizard, frog, fish
Endotherm An animal whose body controls and regulates its body temperature from within, by controlling the heat it produces/releases Ex: humans, rabbits, birds
Fish An ectothermic vertebrate that lives in water, has fins and scales, ans breathes with gills
Cartilaginous Made of cartilage
Swim Bladder An internal gas-filled sac that helps stabilize a fish at various depths
Buoyant force the upward force exerted by water on an object or organism in or on it
Amphibian an ectothermic vertebrate that spends its early life in water and its adult life on land. Means "Double life"
Atria the upper chambers of the heart
Ventricle The lower chamber of the heart
Habitat the specific environment in which an organism lives
Reptile an egg laying, ectothermic vertebrate that has lungs and scaly skin
Kidney organs that filter waste from the blood
urine watery fluid containing waste filtered from the blood that is excreted from the body of an animal
Dewlap flap of loose skin under the head of a male reptile (Can be expanded when courting or defending territory)
Kilogram metric unit used for mass or weight
incubation period during which an organism develops inside an egg
Fossil the hardened remains or other evidence ofa living thing that existed a long time in the past
sedimentary rock rock made of hardened layers of sediment
paleontologist scientists who study extinct organisms by studying their fossil remains and comparing them to present-day organisms
Amber a hard yellowish to brownish fossil resin formed by tree sap
Three fish types Bony fish, Cartilaginous fish, Jawless fish
Example of Bony fish Trout, Flounder, Rainbow
Example of Cartilaginous fish Shark
Example of Jawless fish Lamprey
Characteristics of fish Scales, Gills, Ectotherm, Fins
Characteristics of Amphibians Atria, ventricles, ectotherm, vertebrate, lungs as adults, gills as larvae
Characteristics of Reptiles One lung, eyelids (lizards), eggs with leathery shells, external ears (lizards), lays eggs on land, scaly skin

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