Of the following which one is not the characteristic of dinoflagellates?
Correct answer: C. Their cells are often covered with shells of interlocking cellulose plates impregnated with calcium
- A. Most of them are unicellular
- B. They have blooms
- C. Their cells are often covered with shells of interlocking cellulose plates impregnated with calcium
- D. None of these
Explanation
Most dinoflagellates are unicellular and many produce blooms, while many have cellulose plates forming a theca. The statement about plates being impregnated with calcium is not a general characteristic, so option c is the exception; students may choose d if they overlook that calcium impregnation is inaccurate.
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