Since echinoderms and hemichordates both have ciliated larvae that are bilaterally symmetrical, they are both classified as
A) ambulacrarians.
B) echinozoans.
C) asterozoans.
D) pterobranchs.
E) yunnanozoans.
Correct Answer:
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Q11: Living deuterostomes comprise three clades: the echinoderms,
Q12: Which of the following echinoderms does not
Q13: In _, the coelom arises from _
Q14: A _ that develops from mesodermal pockets
Q15: Fossil evidence indicates that the earliest deuterostomes
Q17: Which of the following did not occur
Q18: Which of the following observable characteristics places
Q19: Which echinoderm group lacks "arms"?
A) Sea feathers
B)
Q20: A water vascular system may be advantageous
Q21: Acorn worms and pterobranchs have a body
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