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D.C. chapter 9

key terms

TermDefinition
vertebrate animal with a backbone
endoskeleton skeleton inside the body
invertebrate animal without a backbone
exoskeleton skeleton on the outside of the body
pores tiny opening
poriferan invertebrate animal withn pores
spicule of a sponge
cnidaraian invertebrate animal with stinging cells and a hollow central cavity
polyp cuplike forn of a cnidarian
medusa umbrella-like form of a cnidarian
platyhelminth type of worm with a flattened body
parasite organism that gets its food by living on or in the body of another organism
nematode type of worm with a round body
annelid type of worm with a sefmented body
setae tiny, hairlike bristles
closed circulatory system: organ system in which blood moves through vessels
mollusk soft-bodied organism
mantle thin membrane that covers a mollusk's
radula rough, tonguelike organ of a snail
echinoderm spiny-skinned animal
water-vascular system: system of tubes used to transport water
tube feet small structures of echinoderms used for movement and feeding
regeneration ability to regrow lost parts
arthropod animal with an exoskeleton and jointed legs
chitin hard material that makes up the exoskeleton of arthropods
open circulatory system circulatory system in which blood does not flow constantly through tubes
molting process by which an animal sheds its outer covering
antenna structure used for touch, tasted, and smell
thorax middle section of an insect's body
abdomen third section of an insect's body
spiracle opening to an air tube of a grasshoper
tympanum hearing organ in a grasshoper
metamorphosis series of developmental changes of an organism
iarva immature stage of many animals that usually looks different from the adult form
pupa resting stage during complete metamorphosis
cocoon protective covering around the pupa
nymph young insects that looks like the adult
Created by: deandra123
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