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C&L Sc vocab #3

Mr. Stickler's C&L 6th Science vocab. #3

TermDefinition
Chordate An animal that has the beginnings of a backbone during one or more stages of development.
Exoskeleton A hard, external covering of an animal; most arthropods have one.
Ectotherm A cold-blooded animal whose body temperature fluctuates with the temperature of its environment.
Appendage An external structure that extends from the main body.
Endotherm A warm-blooded animal that maintains a constant internal temperature.
Keratin A protein that makes up bird feathers.
Arthropod An inverterbrate that has a segmented body, jointed appendages, and usually an exoskeleton.
Crustacean The class of animals with a hard exoskeleton.
Mollusk The phylum of animals with shells, antennae, and soft bodies.
Echinoderm The phylum with radial symmetery, tube feet, and spiny skin.
Cnidarian The phylum that has stinging cells and a medusa-shaped body (such as the jellyfish) or a polyp-shaped body (such as the sea anemone).
Poriferan The phylum of porous invertebrates that filter water for nutrients.
Ostia The small pores through which water and nutrients enter a sponge.
Biome A large region that has a particular climate and specific plants & animals.
Cephalopods A class of animals with tentacles; means "head-foot".
Gastropod A class of animals of one-shelled mollusks.
Created by: sticklerpjpII
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