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chapter 9 lifesciene

typeing of some animals without backbones.

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 openings
poriferan invertebrate animal with pores
spicule small,hard,needlelike structure of a sponge
cnidarian invertebrate animal with stinging cells and a hollow central cavity
polyp cuplike form a cnidarian
medusa umbrella-like form of a cnidarian
platyhelminth type of worm with a flattened body
parasite
Created by: shadowclaw345
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