Paramecium moves about by

The causal organism for African sleeping sickness is

In $Amoeba$ and $Paramecium$,osmoregulation occurs through . . . . . . .

Which type of symmetry is observed in the phylum Protozoa?

Which of the following organisms possesses cilia?

Select the correct option for the following statements:
$(i)$ All protozoans are heterotrophs and live as predators or parasites.
$(ii)$ $Trypanosoma$ causes sleeping sickness.