Sea cucumbers have an elongated body,and they typically lie on one side.
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Q13: Sea stars
A)live in brackish waters.
B)have bilateral symmetry.
C)use
Q14: The echinoids
A)have five long,slender arms.
B)are enclosed in
Q15: Echinoderms
A)are clearly related to cnidarians because of
Q16: Echinoderms have the ability to osmoregulate regardless
Q17: The madreporite of asteroids leads directly the
Q19: The anus of asteroids is located on
Q20: Class Asteroidea
A)have pentaradial symmetry.
B)feeds on clams.
C)feeds on
Q21: Of the echinoderms,regeneration and autotomy are most
Q22: Of the two classes of Hemichordata,a crown
Q78: The basic five arms of crinoids are
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