What Is NOT a Characteristic of Radiolarians

question 57

Multiple Choice

What is NOT a characteristic of radiolarians?  

• A) They have perforated shells of calcium carbonate.
• B) They form part of the plankton.
• C) They have two cytoplasmic layers.
• D) They have vacuoles that impart buoyancy.
• E) They are heterotrophic protists.

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