In which group of organisms the cell walls form two thin overlapping shells which fit together?

In which group of organisms the cell walls form two thin overlapping shells which fit together?
A Slime moulds
B Chrysophytes
C Euglenoids
D Dinoflagellates

Kingdom Protista in past papers

3 questions from this chapter have appeared across 3 exam years.

Keep going

Practise Kingdom Protista All 3 questions This chapter in 2015 AIPMT-II