In sponges, spicules are ____.
A) fibrous skeletal proteins
B) specialized digestive cells
C) complicated pore openings and passageways
D) needlelike skeletal structures made up of silica or calcium carbonate
E) feeding cells with a flagellum surrounded by a collar
Correct Answer:
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Q34: Members of the_ phylum have radial symmetry,
Q35: Most members of the _ Cnidarian lineage,
Q36: Members of the _ Lophotrochozoan phylum are
Q37: Which phylum is a member of the
Q38: Members of the _ flatworm lineage are
Q40: Adult members of the _ Cnidarian lineage,
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Q42: Members of the _ Ecdysozoan phylum include
Q43: Members of the _ lineage have a
Q44: Members of the _ lineage, including slugs
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