Which of the following is NOT a method of motility for protozoa?

Cellular division is not a method of motility for protozoa. Instead, it refers to the process by which a protozoan reproduces or increases its population by dividing into two or more daughter cells. This process does not involve movement from one location to another, which is a key characteristic of motility.

In contrast, flagella and cilia are actual structures used by protozoa for locomotion. Flagella are long, whip-like appendages that enable some protozoa to swim in their aquatic environments. Cilia are shorter, hair-like structures that can cover the surface of a protozoan, allowing for coordinated movements like rowing through water. Cytoplasmic streaming, while primarily a mechanism of movement within a cell rather than a means of locomotion, can also be utilized in some protozoa to facilitate movement by distributing cytoplasmic contents and aiding in the movement of the organism as a whole.

Thus, cellular division stands out as a reproductive process rather than a means by which protozoa achieve movement.