The major difference between protostomes and deuterostomes is the
A) presence or absence of cephalization.
B) presence or absence of tissues.
C) presence or absence of a coelom.
D) type of body symmetry.
E) way the body cavity forms.
Correct Answer:
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Q2: The common ancestor of sponges and other
Q3: Which germ layer gives rise to the
Q4: A_ is an organism whose body cavity
Q5: Which of the following animal phyla is
Q6: Anemones have no
A) mesoderm.
B) endoderm.
C) ectoderm.
Q7: How many tissue layers are in the
Q8: The only animals that lack tissues are
A)
Q9: Which of the following characteristics is often
Q10: A multicellular organism that lacks cell walls
Q11: Damage to the embryonic ectoderm would show
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