Himmat jingar --- Top-Level MCQs on Blood Components 1. Which component of blood is responsible for transporting oxygen? A. Plasma B. WBC C. RBC ✅ D. Platelets 2. Which blood component plays a major role in clotting? A. Neutrophils B. Platelets ✅ C. RBCs D. Plasma proteins 3. Which plasma protein is mainly responsible for maintaining osmotic pressure? A. Fibrinogen B. Globulin C. Albumin ✅ D. Myosin 4. What is the normal life span of red blood cells? A. 30 days B. 60 days C. 90 days D. 120 days ✅ 5. Which type of WBC is responsible for producing antibodies? A. Neutrophils B. Monocytes C. Basophils D. Lymphocytes ✅ 6. Which blood component is least in quantity in whole blood? A. RBCs B. WBCs ✅ C. Platelets D. Plasma 7. Which plasma protein helps in blood clotting? A. Albumin B. Fibrinogen ✅ C. Globulin D. Hemoglobin 8. Which WBC is involved in allergic reactions? A. Monocytes B. Neutrophils C. Basophils ✅ D. Lymphocytes 9. The color of plasma is: A. Red B. White C. Yellowish ✅ D. Blue 10. What is the function of monocytes? A. Produce histamine B. Antibody production C. Phagocytosis ✅ D. Oxygen transport --- 11. Which of the following has no nucleus? A. WBCs B. Monocytes C. RBCs ✅ D. Lymphocytes 12. The percentage of plasma in blood is approximately: A. 25% B. 45% C. 55% ✅ D. 90% 13. Which WBC is most abundant in human blood? A. Eosinophils B. Neutrophils ✅ C. Basophils D. Lymphocytes 14. What is the function of eosinophils? A. Destroy parasitic worms ✅ B. Blood clotting C. Oxygen transport D. Histamine release 15. Thrombocytes are also known as: A. RBCs B. Platelets ✅ C. WBCs D. Lymph 16. Which blood cells are called 'soldiers of the body'? A. RBCs B. WBCs ✅ C. Platelets D. Plasma 17. Hemoglobin is found in which blood cell? A. Platelets B. Plasma C. RBCs ✅ D. WBCs 18. Which blood component helps in immunity? A. RBC B. Platelets C. WBC ✅ D. Plasma 19. Which vitamin is necessary for blood clotting? A. Vitamin A B. Vitamin B12 C. Vitamin K ✅ D. Vitamin C 20. Which blood component increases during infection? A. RBC B. Plasma C. WBC ✅ D. Platelets ---