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Sci. Vocab Test

the phylum whose members have a notochord, a nerve chord, and slits in their throat area at some point in their lives chordate
a flexible rod that supports a chordates back notochord
the bones that make up the backbone of an animal vertebra
an animal whose body does not produce much internal heat ectotherm
an amimal whose body regulates its own body temperature by controlling the internal heat it produces endotherm
an ectothermic vertebrate that lives in water and has fins fish
a tissue that is more flexible than bone cartilage
an internal gas-filled organ that helps a bony fish stabilize its body at different water depths swim bladder
an ectothermic vertebrate that spends its early life in water and its adult life on land amphibian
The larval form a frog or a toad tadploe
an organ found in air breathing vertebrates that exchanges oxygen and carbon dioxide with blood lung
an upper chamber of the heart that recieves the blood artium
a lower chamber of the heart that pumps blood out to the lungs and body ventricle
the specific environment in which an animal lives habitat
a ecthothermic vertebrate that lays eggs and has lungs and scaly skin reptile
a watery fluid produced by the kidneys that contains wastes urine
an organ that filters wastes from the blood kidney
an edd with a shell and internal membranes that keep the embryo moist: a major adaptation to life on land characteristics of reptiles, birds, and egg laying mammals amniotic egg
the hardened remains or evidence of a living thing that existed a long time ago fossil
A scientist who studies extinct organisms, examines fossil structure, and makes comparisons to present day organisms palentoligist
rock formed of hardened layers of sediments sedimentary rock
an ectothermic vertebrate that has feathers and lays eggs and a four chambered heart bird
a large feather that helps give shape to a bird's body contour feather
a short, fluffy feather that traps heat and kepps a bird warm down feather
an internal organ in many birds that stores food crop
a muscular, thick walled part of a bird's stomach that squeezes and grinds partially digested food gizzard
the difference in pressure between upper and lower surfaces of a bird's wings that produces an upward force causes the bird to rise lift
an ectothermic vertebrate with a four chambered heart and skin covered with fur or hair, that feeds its young withmilk from a mother's body mammal
an organ in femal mammals that produces milk for the mammal's young mammary gland
a large muscle located at the bottom of an animal's rib cage that functions in breathing diaphragm
a mammal that lays eggs monotreme
a mammal whose young are born at an early stage of development, and which usually continue to develop in a pouch on their mother's body marsupial
the length of time between fertilization and birth of a mammal gestation period
a mammal that develops inside its mother's body until its body systems can function independently placental mammal
an organ in pregnant placental mammals tht passes materials between the mother and the developing embryo placenta
Created by: ltgoheen