Which of the following statements about dinoflagellates is true?
A) They possess two flagella.
B) All known varieties are autotrophic.
C) Their walls are usually composed of silica plates.
D) Many types lack mitochondria.
E) Their dead cells accumulate on the seafloor, and are mined to serve as a filtering material.

Question

Quizplus · Accepted Answer

Dinoflagellates possess two flagella, which they use for movement.

Answer: None of the above
 Option B is incorrect as some dinoflagellates are heterotrophic. Option C is incorrect as their walls are usually composed of cellulose plates. Option D is incorrect as all known dinoflagellates possess mitochondria. Option E is incorrect as dead dinoflagellate cells are not typically mined for filtering material.

Which of the Following Statements About Dinoflagellates Is True