22. What is the importance of cilia and flagella for
microorganisms?

Cilia and flagella are motile cellular appendages found in most microorganisms and animals, but not in higher plants. In multicellular organisms, cilia function to move a cell or group of cells or to help transport fluid or materials past them.Cilia and flagella are organelles on cells that provide propulsion, sensory devices, clearance mechanisms and numerous other important functions in living organisms.

Explanation:

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Motile cilia use their rhythmic undulation to sweep away substances, as in clearing dirt, dust, micro-organisms and mucus, to prevent disease.