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7 Cards in this Set
- Front
- Back
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echinoderm
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members of the phylum Echinodermata
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ossicle
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calcium carbonate plates that compose the endoskeleton
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water-vascular system
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network of water-filled canals in the body
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tube feet
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small, movable extensions of the water-vascular system
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test
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fused, rigid endoskeleton that encloses the internal organs
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pedicellariae
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numerous, tiny pincers surrounding each spine
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madreporite
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a sieve-like plate on the aboral surface
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