In the five kingdom classification,which kingdom occupies an intermediate position from a phylogenetic point of view?

What is the meaning of the term $Protozoa$?

An $X$ reproduces in such great numbers that the water may appear red,producing red tides and killing large marine animals like $Z$. $X$ belongs to $Y$. Identify $X$,$Y$,and $Z$.

What are the similarities between Entamoeba and Plasmodium?

Describe the body organization of ciliated protozoans.

What is the nature of cell-walls in diatoms?