Which root means varied or irregular?

Which root means varied or irregular?

• A. Polikil(o)
• B. Pneum(o)-
• C. Pnea
• D. Pod(o)

Answer: (A)

The idea here is to recognize a root that describes irregularity or variability in form. The combining form poikilo- (often seen as poikil/o) specifically means varied or irregular, especially when talking about shapes. In medical terms, poikilocytosis refers to red blood cells that come in many different shapes, illustrating this exact sense of irregularity. The other roots point to different concepts: pneum(o)- relates to air or lungs, as in pneumonia or pneumonitis; pnea is tied to breathing (as in apnea or dyspnea); and pod(o) refers to the foot, as in podiatry. None of these convey irregularity in form, which is why poikilo- is the correct root for “varied or irregular.”

The idea here is to recognize a root that describes irregularity or variability in form. The combining form poikilo- (often seen as poikil/o) specifically means varied or irregular, especially when talking about shapes. In medical terms, poikilocytosis refers to red blood cells that come in many different shapes, illustrating this exact sense of irregularity.

The other roots point to different concepts: pneum(o)- relates to air or lungs, as in pneumonia or pneumonitis; pnea is tied to breathing (as in apnea or dyspnea); and pod(o) refers to the foot, as in podiatry. None of these convey irregularity in form, which is why poikilo- is the correct root for “varied or irregular.”