Which one of the following is a slime mould?

Unlike other algae,diatoms do not readily decay due to

African sleeping sickness is caused by $..........$.

Which of the following are the characters of dinoflagellates?
$(i)$ They are planktonic golden yellow algae with soap box like structure.
$(ii)$ They are marine biflagellated protista.
$(iii)$ They appear yellow,green,brown,blue and red in colour.
$(iv)$ The cell wall has stiff cellulose plates on the outer surface.
$(v)$ They are saprophytic (or) parasitic unicellular forms.

. . . . . . are saprophytic protists,whose body moves along decaying twigs and leaves engulfing organic material.

The group Protozoa includes which of the following modes of nutrition?