Reproduction in $Paramecium$ is controlled by

Choose the photosynthetic protozoan from the following.

Which life forms are observed in Protista?

The presence of cilia, an oral groove, and food vacuoles, and the absence of chloroplasts in a unicellular organism indicate that the organism carries on

What is the ecological and economic importance of the following organisms?
$(i)$ Diatoms
$(ii)$ Mycorrhiza

The term $...........$ means 'first animals'.