Of the following structures found in sea stars,which one is also present in brittle stars?
A) pedicellariae
B) tube feet
C) dermal branchiae
D) aboral madreporite
E) ampullae
Correct Answer:
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Q30: The skeleton of sea urchins consists of
Q31: Which of the following echinoderms may contain
Q32: The madreporite in sea cucumbers is
A)absent.
B)internal.
C)external.
D)on the
Q33: If a brittle star is grasped by
Q34: The function of Aristotle's lantern is
A)protection.
B)digestion.
C)chewing.
D)locomotion.
E)regeneration.
Q36: Some sea cucumbers have special tubules of
Q37: Attached crinoids are called
A)sea daisies.
B)sea lilies.
C)sea urchins.
D)basket
Q38: Sea cucumbers belong to the echinoderm class
A)Holothuroidea.
B)Crinoidea.
C)Asteroidea.
D)Ophiuroidea.
E)Concentricycloidea.
Q39: Sea urchins and sand dollars belong to
Q40: The primary circulatory medium in echinoids is
A)blood.
B)hemal
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