Which of the following is a red dinoflagellate?

Unicellular eukaryotes are included in which of the following kingdoms?

Match the type of protozoans given in column-$I$ with their examples given in column-$II$ and choose the correct option.

Column-$I$ (Type of Protozoans)	Column-$II$ (Examples)
$A$. Amoeboid protozoans	$I$. Paramecium
$B$. Ciliated protozoans	$II$. Plasmodium
$C$. Flagellated protozoa	$III$. Amoeba
$D$. Sporozoans	$IV$. Trypanosoma

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

In which organism is a dimorphic nucleus found?

Which one is the correct pairing?