Leukocytes are ____ compared to platelets.

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

Answer: (A)

Leukocytes are larger than platelets. Leukocytes are whole, nucleated cells with diameters typically around 7–15 micrometers, depending on the type, whereas platelets are tiny, anucleate cell fragments about 2–3 micrometers in diameter. This size difference is what you observe on a blood smear or in counting methods: leukocytes appear as distinctly larger cells, while platelets are small specks. Because of their nucleus and larger size, leukocytes stand out as bigger cells compared to platelets. The other options don’t fit: leukocytes are not smaller or similar in size to platelets, and while their shapes can vary, the key point is their overall larger size.