Multiple Choice
Which of the following describes spicules?
A) They are complicated pore openings and passageways found in sponges.
B) They are fibrous skeletal proteins found in sponges.
C) They are needlelike skeletal structures made up of silica or calcium carbonate found in sponges.
D) They are specialized digestive cells found in sponges.
Correct Answer:
Verified
Correct Answer:
Verified
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