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Homeostatis The condition in which an organism's internal envirment is kept stable in spite of changes in the external envirment
Adaptaion An inherited behavior or physical charactic that helps an organism survive and reproduce in its envirment
Vertebrate A animal with a backbone
Invertebrate A animal without a backbone
tissue A group of similer cells that perform a specific function
Organ A body structure that is composed of different kinds of tissues that work together
Radial Symmetry A body plan in which any number of imaginary lines that all pass through a central point divide the animal into two mirror images
Bilateral Symmetry A bodyplan in which a single imaginary line divides the body into left and right sides that are mirror images of each other
Cnidarian A radially symmetrical invertebrate that uses stinging cells to capture food and defend itself
Mollusks An invertebrate with a soft, unsegmented body, most are protected by a hard outer shell
Arthropods An invertebrate that has an external skeleton, a segmented body, and joined appendages
Exoskeleton External skeleton, a tough waterproof outer covering that protects, supports, and helps prevent evapration of water from the body of many invertebrstes
Echinoderm A radially symmetrical marine invertebrates that has an internal skeleton and a system of fluidfilled tubes
Endoskeleton An internal skeleton : structure support system within the body of an animal
Chordate An animal that has a notochord, a nerve cord
Notochord A flexible rod that supports a chordate's back just below the nerve cord
Vertebrate An animal that has a backbone
Ectotherm An animal whose body tempertaure is determined by the temperature of its envirment
Endotherm An animal whose body temperature is regulated by the interna heat the animal produces
Fish A vertebrate whose body tempeture is determand by the tempeture of its envirment and that lives in the water and has fins
Cartilage A connective tissue that is more flexable then bone and that protects the ends of the bones and keeps them from rubbing together
Amphibian A vertebrate whose body temperature is demanded by the tempeture of its envirment and that lives entiore life in water and its adult life on land
Reptile A vertebrate whose tempetures is demanded by the tempeture of its envirment thag has lungs and scaly skin and that can lay eggs on land
Bird A vertebrste whose body tempeture is regulated by its internal heat lays eggs and has feathers and a four-chambered heart
Mammal gland An organ in female mammals that produces milk for the mammal's young
Monotreme A mammal that laya eggs
Marsupial A mammal whose young are born at an early age of development and which usually contimue to develop in a pouch on their mothers body
Placental mammal A mammal that develops inside its mothers body until its body systems can function indpendly
Placenta An organ in the most pregnent mammals including humans that links the mother and the developing embryo and allows for the for the passage of materials between them
Created by: Paigerobinson1