Q7: The flatworms are more derived (or advanced)than
Q8: Radial symmetry and cephalization evolved together in
Q9: All pseudocoelomate organisms have a complete digestive
Q10: The term tegument is most appropriate for
Q11: The main ill effects in schistosomiasis result
Q13: Flatworms have three germ layers: ectoderm,mesoderm,and endoderm.
Q14: Many rotifers can reproduce parthenogenetically.
Q15: Gastrotrichs are large,wormlike animals.
Q16: Flame cells are the primary excretory structures
Q17: The nervous system in planaria is
A)absent.
B)a nerve
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