The simplest multicellular animals that have only a few different cell types are
A) sponges.
B) sea squirts.
C) flatworms.
D) jellyfish.
E) anemones.
Correct Answer:
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Q16: In the animal kingdom, cephalization is
A) development
Q17: The skin and nervous tissues develop from
Q18: A cnidarian, which is radially symmetrical, has
Q19: All animals with tissues have
A) radial symmetry.
B)
Q20: Which of the following characteristics is associated
Q22: Giant squids are classified as
A) echinoderms.
B) chordates.
C)
Q23: The currents of water (containing food) that
Q24: Insects are members of the group
A) Echinodermata.
B)
Q25: Which of these groups is characterized by
Q26: Hydra, anemones, and jellyfish are in the
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