Echinoderms have the ability to osmoregulate regardless of the salinity of the water and are thus found in marine and brackish waters.
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Q11: A unique characteristic of echinoderms is
A)the endoskeleton
Q12: The fossil record indicates crinoids are more
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
Q17: The madreporite of asteroids leads directly the
Q18: Sea cucumbers have an elongated body,and they
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
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