The function of the contractile vacuole in $Amoeba$ is:

Protozoans are able to live efficiently due to their

Which of the following is true for the phylum Protozoa?

$A$: Slime moulds form fruiting bodies under unfavourable conditions.
$R$: Naked plasmodium is formed during favourable conditions.

Dinoflagellates are...

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.