The main difference between eumetazoans and parazoans is that
A) parazoans do not have an embryonic stage.
B) parazoans do not have cell layers.
C) parazoans do not have differentiated cells.
D) parazoans have no tissues or organs.
E) eumetazoans have a complex nervous system.
Correct Answer:
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Q3: Fossil evidence about the origins of metazoans
Q4: Which animal phylum is NOT a member
Q5: Animal phyla that show protostome development include
A)
Q6: Differences between protostomes and deuterostomes are first
Q7: With the exception of cnidarians and nematodes,
Q9: A distinctive feature of phylum Porifera is
A)
Q10: Amoebocytes in sponges are described as totipotent
Q11: The skeleton of a sponge may be
Q12: Which animal does NOT belong to the
Q13: In cnidarians, the mouth is borne on
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