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invertebrate vocab

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Question
Answer
spongocoel   central cavity into which water flows through sponge  
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oscula   openings out of which water is expelled  
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epithelial cells   cover outer body; some modified to become porocytes  
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choanocytes (aka collar cells)   maintain feeding current  
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mesohyl   jellylike matrix holding cells together in sponge  
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amoebocytes   digest and distribute nutrients; make reproductive cells  
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spicules   skeletal elements of a sponge  
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mode of reproduction in a sponge   asexual budding or sexual sperm and egg  
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define eumetoszoa   true tissues  
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name the phylum of anemones, corals ad hydras   cnidaria  
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are cnidarians radial or bilateral? diplo or triploblastic   radial and diploblastic  
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name cnidarians' two tissue layers   epidermis and gastrodermis. both layers have filaments that behave as primitive muscles and nerves  
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mesoglea   gelatinous substance that holds tissues together  
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cnidocytes   special cells at tips of tentacles that have poisonous barbs for capturing prey  
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what class are obelia, hydra and portuguese man-o-war in?   hydrozoza  
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what class are jellies, sea wasp and sea nettle in?   scyphozoa  
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what class are box jellies in?   cubazoa  
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what class are coral and anemonies in?   anthozoa  
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