Which protozoan possesses a whip-like flagellum?

'Trypanosomiasis' is transmitted by or the carrier of Trypanosoma in man is:

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.

Which of the following is a sexual mode of reproduction in protozoa?

In which of the following is a contractile vacuole $NOT$ found?

During conjugation in $Paramecium$,which of the following events occurs?