This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 18 Body Fluids And Circulation – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 18 Body Fluids And Circulation Quiz 8 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the lifespan of red blood cells (RBCs) in humans? A) 30 days. B) 60 days. C) 120 days. D) 200 days. Show Answer Correct Answer: C) 120 days. 2. Which of the following is the primary component of human blood? A) Plasma. B) Platelets. C) WBCs. D) RBCs. Show Answer Correct Answer: A) Plasma. 3. If clotting is affected due to low platelet count, it may cause A) Improved wound healing. B) Increased bleeding or bruising. C) Reduced risk of bleeding. D) Increased clotting or scabbing. Show Answer Correct Answer: B) Increased bleeding or bruising. 4. Which of the following statements is true for lymph? A) WBCs + serum. B) Blood-RBCs and some proteins. C) RBCs + WBCs + plasma. D) RBCs + proteins + platelets. Show Answer Correct Answer: B) Blood-RBCs and some proteins. 5. Cardiac output is determined by- A) Heart rate. B) Stroke volume. C) Blood flow. D) Both a and b. Show Answer Correct Answer: B) Stroke volume. 6. The universal donor blood group is: A) O. B) A. C) B. D) AB. Show Answer Correct Answer: A) O. 7. A substance present over the surface of RBC and is genetically heritable is called A) Blood group. B) Haemoglobin. C) Antibody. D) None. Show Answer Correct Answer: D) None. 8. Eosinophills helps in: A) Clotting. B) Digestion. C) Inflammatory reactions. D) Resisting infection. Show Answer Correct Answer: C) Inflammatory reactions. 9. A certain road accident patient with an unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor? A) A. B) AB. C) B. D) O. Show Answer Correct Answer: D) O. 10. During fibrinolysis, which enzyme induces lysis of fibrinogen to fibrin? A) Plasmin. B) Thrombin. C) Heparin. D) Trypsin. Show Answer Correct Answer: B) Thrombin. 11. ECG depicts the depolarization and repolarization processes during the cardiac cycle. In the ECG of a normal healthy individual one of the following waves is not represented. A) Depolarisation of atria. B) Repolarisation of atria. C) Depolarisation of ventricles. D) Repolarisation of ventricles. Show Answer Correct Answer: B) Repolarisation of atria. 12. Which statement is incorrect about haemoglobin A) It is a protein. B) It helps in Oxygen transport. C) It helps in CO2 transport. D) It is a triglyceride. Show Answer Correct Answer: D) It is a triglyceride. 13. Valves occur in: A) Arteries, veins and auricles. B) Atria, ventricles and veins. C) Arteries, veins and ventricles. D) SA node, AV node, veins. Show Answer Correct Answer: B) Atria, ventricles and veins. 14. The heart rate is maximum in A) Adult Males. B) Foetus. C) Elderly People. D) Adult Females. Show Answer Correct Answer: B) Foetus. 15. Read the following statements and select the correct option.Statement 1:The four-chambered heart is present in birds and crocodiles.Statement 2:Birds have two separate circulatory pathways. A) Both statements 1 and 2 are incorrect. B) Statement 1 is correct but statement 2 is incorrect. C) Statement 1 is incorrect but statement 2 is correct. D) Both statements 1 and 2 are incorrect. Show Answer Correct Answer: A) Both statements 1 and 2 are incorrect. 16. Which of the following statements is / are incorrect about lymph?i) Lymph is colourful as it has haemoglobin but no RBCii) It contains specialised lymphocytes which are responsible for immunity for the body.iii) Lymph is an important carrier for nutrients and hormones.iv) Fats are absorbed through lymph in the lacteals present in the intestinal villi. A) (i) only. B) (iii) and (iv). C) (ii) and (iii). D) (iv) only. Show Answer Correct Answer: A) (i) only. 17. Which of the following is a characteristic of the closed circulatory system? A) Blood flows freely in body cavities. B) Blood is not oxygenated. C) Blood is always contained within vessels. D) No heart is present. Show Answer Correct Answer: C) Blood is always contained within vessels. 18. What is the primary function of the pulmonary circulation? A) Transport blood to the heart. B) Remove carbon dioxide from tissues. C) Deliver oxygen to tissues. D) Oxygenate blood in the lungs. Show Answer Correct Answer: D) Oxygenate blood in the lungs. 19. Fully mature human RBC has ..... A) A Nucleus. B) No nucleus. C) Nucleus may or may not be present. D) None of the above. Show Answer Correct Answer: B) No nucleus. 20. Which of the following statements is correct regarding veins? A) Carry blood from an organ towards the heart. B) All veins carry oxygenated blood with single exception. C) Carry blood from heart towards the organ. D) All of these. Show Answer Correct Answer: A) Carry blood from an organ towards the heart. 21. Platelets are formed from A) Megakaryoblast. B) Megakaryocytes. C) Macrokaryoblast. D) Macrophages. Show Answer Correct Answer: B) Megakaryocytes. 22. Arteries have ..... and ..... walls when compared to veins A) Thicker; stronger. B) Thicker; weaker. C) Thinner; stronger. D) Thinner; weaker. Show Answer Correct Answer: A) Thicker; stronger. 23. Histamine and the natural anti-coagulant heparin are released by what type of white blood cells? A) Neutrophils. B) Basophils. C) Eosinophils. D) Monocytes. Show Answer Correct Answer: B) Basophils. 24. A person with AB blood group: A) Has A, B antigen in plasma. B) Lacks any antibodies on RBCs. C) Can receive blood transfusion from a person of his own blood group. D) Can donate blood to all other group recipients. Show Answer Correct Answer: C) Can receive blood transfusion from a person of his own blood group. 25. A heart murmur indicates a defective: A) Heart valves. B) Bundle of his. C) SA node. D) AV node. Show Answer Correct Answer: A) Heart valves. ← PreviousNext →Related QuizzesClass 11 Biology Chapter 18 Body Fluids And Circulation Quiz 1Class 11 Biology Chapter 18 Body Fluids And Circulation Quiz 2Class 11 Biology Chapter 18 Body Fluids And Circulation Quiz 3Class 11 Biology Chapter 18 Body Fluids And Circulation Quiz 4Class 11 Biology Chapter 18 Body Fluids And Circulation Quiz 5Class 11 Biology Chapter 18 Body Fluids And Circulation Quiz 6Class 11 Biology Chapter 18 Body Fluids And Circulation Quiz 7Class 11 Biology Chapter 18 Body Fluids And Circulation Quiz 9Class 11 Biology Chapter 18 Body Fluids And Circulation Quiz 10Class 11 Biology Chapter 18 Body Fluids And Circulation Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books