Which of the following is NOT a type of marine phytoplankton that makes up a major portion of marine sediments?

Which of the following is NOT a type of marine phytoplankton that makes up a major portion of marine sediments?

Which of the following is NOT a type of marine phytoplankton that makes up a major portion of marine sediments?


W)Dinoflagellates
X) Diatoms
Y) Coccolithophorids
Z) Radiolarians


Answer: W