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bmms chpt.11 lifesci

bmms chpt. 11 life science

QuestionAnswer
The cnidarian bowl-shaped body plan. medusa
The cnidarian vase-shaped body plan. polyp
The immature form of an animal that looks very different from the adult. larva
Has no backbone. invertebrate
The study of the structure of organisms. anatomy
The heart pumps blood into a short vessel that opens into spaces in the body, and in which blood is not confined to blood vessels. open circulatory system
A flexible ribbon of tiny teeth in mollusks. radula
An invertebrate with a soft, unsegmented body. mollusk
Blood moves only within a connected network of tubes called blood vessels. closed circulatory system
A mollusk with a single shell or no shell. gastropod
The organism that benefits from living on or in a host. parasite
An invertebrate animal that uses stinging cells to capture food and defend itself . cnidarian
Body plan with two halves that are mirror images. bilateral symmetry
The quality of having many lines of symmetry that all pass through a central point. radial symmetry
The organism that a parasite or virus lives in or on. host
An ocean-dwelling mollusk whose foot is adapted astentacles that surround its mouth. cephalopod
The process of shedding an outgrown exoskeleton. molting
An internal skeleton. endoskeleton
A waxy, waterproof outer shell or outer skeleton that protects the animal and helps prevent evaporation of water. exoskeleton
An invertebrate that has an external skeleton, a segmented body, and jointed appendages. arthropod
A system of fluid-filled tubes in an echinoderm’s body water vascular system
A process in which an animals body undergoes dramatic changes in form during its life cycle. metamorphosis
A radially symmetrical invertebrate with an internal skeleton and a water vascular system. echinoderm
An arthropod with two body sections, four pairs of legs, and no antennae. arachnid
An arthropod that has two or three body sections, five or pairs of legs, and two pairs of antennae. crustacean
Created by: tgsheldon
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