This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 18 Body Fluids And Circulation – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 18 Body Fluids And Circulation Quiz 9 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The phrase "graveyard of RBC" is used for A) Liver. B) Spleen. C) Bone marrow. D) Heart. Show Answer Correct Answer: B) Spleen. 2. 1st heart sound is due to A) Closure of semilunar valve. B) Closure of pulmonary and aortic valve. C) Vibration just after closure of mitral and tricuspid valve. D) Vibration after closure of pulmonary and aortic valve. Show Answer Correct Answer: C) Vibration just after closure of mitral and tricuspid valve. 3. What part of the lymphatic system acts as a trap to filter foreign particles and pathogens out of the lymph? A) Tonsil, but not the appendix. B) Lymph capillaries. C) Thymus. D) Lymph nodes. Show Answer Correct Answer: D) Lymph nodes. 4. Platelets play a major role in: A) Oxygen transport. B) Nutrient absorption. C) Blood clotting. D) Immune response. Show Answer Correct Answer: C) Blood clotting. 5. Assertion (A)-Atherosclerosis, affects the vessels that supply blood to the heart muscle.Reason (R)-Deposition of calcium, fat, cholesterol and fibrous tissues makes the lumen of artery narrower . A) Both A and R are true and R is correct explanation of A. B) Both A and R are true and R is not correct explanation of A. C) A is true but R is false. D) A is false but R is true. Show Answer Correct Answer: A) Both A and R are true and R is correct explanation of A. 6. Standard ECG of a normal person. The P-wave represents the ..... A) Contraction of both the atria. B) B) Initiation of the ventricular contraction. C) C) Beginning of the systole. D) D) End of systole. Show Answer Correct Answer: A) Contraction of both the atria. 7. What would be the heart rate of a person if the cardiac output is 6 L, blood volume in the ventricles at the end of diastole is 120 mL and at the end of ventricular systole is 60 mL? A) 50 beats per minute. B) 75 beats per minute. C) I00 beats per minute. D) I25 beats per minute. Show Answer Correct Answer: C) I00 beats per minute. 8. Which of the following is associated with decrease in cardiac output: A) Parasympathetic neural signals. B) Pneumotaxic centre. C) Adrenal medullary hormones. D) Sympathetic nerves. Show Answer Correct Answer: A) Parasympathetic neural signals. 9. Mark the pair of substances among the following which is essential for coagulation of blood A) Heparin and calcium ions. B) Calcium ions and platelet factors. C) Oxalates and citrates. D) Platelet factors and heparin. Show Answer Correct Answer: B) Calcium ions and platelet factors. 10. Visceral and parietal pericardium is made up of: A) Cuboidal and squamous epithelium. B) Simple squamous epithelium. C) Collagen fibres. D) Endothelium. Show Answer Correct Answer: B) Simple squamous epithelium. 11. Rh factor was discovered by A) Landsteiner and Weiner. B) William Harvey. C) Malpighi. D) None of these. Show Answer Correct Answer: A) Landsteiner and Weiner. 12. Heart pumps blood more forcefully in older persons than younger ones due to A) Decrease in oxygen content of blood. B) Decrease in elasticity of arteries. C) Fall in nutrient content of blood. D) Increase in elasticity of arteries. Show Answer Correct Answer: B) Decrease in elasticity of arteries. 13. Conversion of C02 into H2 CO 3 is carried out by enzyme A) Hexokinase. B) Carbonic anhydrase. C) Carboxy peptidase. D) Both a and c. Show Answer Correct Answer: B) Carbonic anhydrase. 14. Read the following statements and select the correct option.Statement 1:Lymphatic capillaries are free and blind at one end.Statement 2:Lymph does not flow in a circular manner. A) Both statements 1 and 2 are correct. B) Statement 1 is correct but statement 2 is incorrect. C) Statement 1 is incorrect but statement 2 is correct. D) D) Both statements 1 and 2 are incorrect. Show Answer Correct Answer: A) Both statements 1 and 2 are correct. 15. Which blood component is correctly paired with its primary function in transport and defense? A) Platelets-oxygen transport. B) Plasma-clot formation. C) RBCs-oxygen carriage. D) WBCs-gas exchange. Show Answer Correct Answer: C) RBCs-oxygen carriage. 16. -Assertion. The alveoli are richly supplied with blood.Reason. Each bronchiole has 10 alveolar sacs. A) Both Assertion and Reason are true and Reason is the correct explanation of Assertion. B) Assertion and Reason are true but Reason is not the correct explanation of Assertion. C) Assertion is true but Reason is false. D) Both Assertion and Reason are false. Show Answer Correct Answer: D) Both Assertion and Reason are false. 17. Blood flow velocity is slowest in the A) Arteries. B) Arterioles. C) Capillaries. D) Venules. Show Answer Correct Answer: C) Capillaries. 18. Which of the following chambers of the heart pumps oxygenated blood to the systemic circulation? A) Right atrium. B) Right ventricle. C) Left atrium. D) Left ventricle. Show Answer Correct Answer: D) Left ventricle. 19. Protein constitute how much percentage of plasma A) 8-10. B) 2-5. C) 6-8. D) 5-7. Show Answer Correct Answer: C) 6-8. 20. Coagulation will not be affected in the absence of factor A) VII. B) XII. C) VIII. D) VI. Show Answer Correct Answer: D) VI. 21. The atrioventricular valve of the heart is prevented from turning inside out by tough strands of connective tissue is called as- A) Tricuspid valve. B) Bicuspid valve. C) Papillary muscle. D) Chordae tendinae. Show Answer Correct Answer: D) Chordae tendinae. 22. The 'lubb' sound is caused due to: A) Filling of ventricles. B) Ventricular contraction. C) Closing of AV valves. D) Closing of semilunar valves. Show Answer Correct Answer: C) Closing of AV valves. 23. We need to draw blood from a patient and keep it in a test tube for analysis of blood corpuscles and plasma. We are provided with the following types of test tubes. Which of these will you not use for the purpose? A) Test tube containing Heparin. B) Test tube containing EDTA. C) Test tube containing Sodium Citrate. D) Test tube containing Calcium Chloride. Show Answer Correct Answer: D) Test tube containing Calcium Chloride. 24. What is the difference between systole and diastole? A) Contraction vs relaxation. B) Pumping vs resting. C) Filling vs emptying. D) Oxygenation vs deoxygenation. Show Answer Correct Answer: A) Contraction vs relaxation. 25. AV bundle give rise to minute fibres that are present throughout the ventricles are- A) Chordae tendinae. B) Purkinjie fibres. C) Muscle fibre. D) Nodal tissue. Show Answer Correct Answer: B) Purkinjie fibres. ← 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 8Class 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