15. Which of these statements about dinoflagellates is false?
(A) They possess two flagella.
(B) Some cause red tides.
(C) Their walls are composed of cellulose plates
(D) Their dead cells accumulate on the seafloor, and are mined to serve as a filtering material
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你好！這是一道關於生物學中原生生物界（P...
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Which of these state...
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