Which of the Following Describes Spicules

question 94

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.

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