Leukocytes are ____ compared to platelets.

• A. Smaller
• B. Similar
• C. Larger
• D. Irregular

Answer: (C)

Size difference between leukocytes and platelets is what this item is testing. Leukocytes are nucleated white blood cells that are larger in diameter, typically around 7–15 micrometers, whereas platelets are tiny, anucleate fragments about 2–3 micrometers across. This fundamental size distinction reflects their different roles—leukocytes in immune defense and platelets in clot formation. So the correct idea is that leukocytes are larger than platelets. The other options don’t fit because platelets are not larger or similar in size, and while leukocytes can have varied shapes, the key comparison here is overall size, which is larger for leukocytes.