The radial symmetry of adult echinoderms could best be described as ________.
A) biradial
B) triradial
C) quadriradial
D) pentaradial
Correct Answer:
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Q7: What happened during the Cambrian explosion?
A)Many large
Q9: What do sponges and cnidarians have in
Q14: Which phylum of worms includes the leeches?
A)Flatworms
B)Annelids
C)Roundworms
D)None
Q15: Most animals fall into one of how
Q16: Gastropods include the _.
A)clams and oysters
B)snails and
Q17: Many, though not all, mollusks have a
Q18: How do sponges acquire their nourishment?
A)They catch
Q20: What defines radial symmetry?
A) Any plane of
Q23: Serial repetition of segments is a defining
Q29: The echinoderms are most closely related to
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