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Which structure is part of an echinoderms water vascular system?
sea urchins and sand dollars
False
madreporite
true
are deuterostomes
True
endoskeleton made of calcium carbonate
False
If a sea star is pulled into pieces, each new piece will produce a new sea star.
sea urchins and sand dollars
False
madreporite
true
are deuterostomes
True
endoskeleton made of calcium carbonate
False
The skeleton of an echinoderm is an
sea urchins and sand dollars
False
madreporite
true
are deuterostomes
True
endoskeleton made of calcium carbonate
False
Two echinoderms that are in the same class are
sea urchins and sand dollars
False
madreporite
true
are deuterostomes
True
endoskeleton made of calcium carbonate
False
An echinoderms water vascular system opens to the outside though the ring canal.
sea urchins and sand dollars
False
madreporite
true
are deuterostomes
True
endoskeleton made of calcium carbonate
False
Echinoderms are like vertebrates in that they
sea urchins and sand dollars
False
madreporite
true
are deuterostomes
True
endoskeleton made of calcium carbonate
False
When an echinoderm exerts a pulling force on an object, muscles pull the centers of the tube feet upward.
sea urchins and sand dollars
False
madreporite
true
are deuterostomes
True
endoskeleton made of calcium carbonate
False
If an echinoderm has slender, flexible arms, can move rapidly, and feeds on detritus, it is a sea urchin.
sea urchins and sand dollars
False
madreporite
true
are deuterostomes
True
endoskeleton made of calcium carbonate
False
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