Question

Life span of a W.B.C in man is

• A. $100$ days
• B. $50$ days
• C. $13-20$ days
• D. None of the above

Answer 1

Answer: (C)

$13-20$ days

The blood cells are of three major types they are erythrocytes(RBC), leucocytes(WBC) and platelets. Leucocytes are also called white blood cells (WBC) as they are colorless due to the lack of hemoglobin. A healthy adult man has, on an average, 6000-8000 of WBCs mm–3 of blood. The lifespan of a W.B.C. in man is 13 -20days.

So, the correct answer is '13 -20days'.