This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 18 Body Fluids And Circulation – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 18 Body Fluids And Circulation Quiz 7 (24 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the primary function of blood in the human body? A) Transportation of nutrients and oxygen. B) Regulation of body temperature. C) Defence against pathogens. D) All of the above. Show Answer Correct Answer: D) All of the above. 2. Thrombin is formed from which inactive plasma substance? A) Histamine in mast cells. B) Myosin in platelets. C) Plasmin in tissue. D) Prothrombin in plasma. Show Answer Correct Answer: D) Prothrombin in plasma. 3. Duration of cardiac cylce is A) 2s. B) 0.8s. C) 3s. D) 1 s. Show Answer Correct Answer: B) 0.8s. 4. Which of the following helps in the clotting of blood? A) Fibrinogen. B) Haemoglobin. C) Albumin. D) Globulin. Show Answer Correct Answer: A) Fibrinogen. 5. Haemoglobin play a role in: A) Blood clotting. B) Respiratory gas transport. C) Harmone transport. D) Digestion. Show Answer Correct Answer: B) Respiratory gas transport. 6. Which one of the following is a matching pair? A) Lub-Sharp closure of AV valves at the beginning of ventricular systole. B) Dub-Sudden opening of semilunar valves at the beginning of ventricular diastole. C) Pulsation of the radial artery-Valves in the blood vessels. D) Initiation of the heartbeat-Purkinje fibres. Show Answer Correct Answer: A) Lub-Sharp closure of AV valves at the beginning of ventricular systole. 7. On the ECG recording the maximum ventricular pressure would be A) At QRS complex. B) At T wave. C) Between QRS complex and T wave. D) Between P and QRS complex. Show Answer Correct Answer: A) At QRS complex. 8. In a standard ECG which one of the following alphabets is the correct representation of the respective activity of the human heart? A) R-Repolarisation of ventricles. B) S-Start of systole. C) P-Depolarisation of the atria. D) T-End of diastole. Show Answer Correct Answer: C) P-Depolarisation of the atria. 9. Which of the following statements is correct regarding neural regulation of cardiac activity? A) The cardiac centre lies in medulla oblangata of brain. B) Sympathetic nerve fibres accelerate the rate of heartbeat and parasympathetic nerve fibres retard the rate of heartbeat. C) Sensory fibres extend from the receptors present in the walls of aortic arch, carotid sinuses and vena cava to the cardiovascular centre in medulla oblangata. D) All of these. Show Answer Correct Answer: D) All of these. 10. What is the average lifespan of a red blood cell (RBC)? A) 90 days. B) 60 days. C) 30 days. D) 120 days. Show Answer Correct Answer: D) 120 days. 11. What vessels hold the largest percentage of the blood supply? A) Vein. B) Arteriole. C) Capillary. D) Artery. Show Answer Correct Answer: A) Vein. 12. What would be the cardiac output of a person having 72 heart beats per minute and a stroke volume of 50 mL? A) 5000 mL. B) 3600 mL. C) 7200 mL. D) 360 mL. Show Answer Correct Answer: B) 3600 mL. 13. Which of the following is true statement about blood transfusion? A) Blood groups B, AB can receive blood from group B and O. B) Blood group B can receive blood from group AB. C) Blood group O can receive blood from group B. D) Blood groups B, AB can receive blood from group AB. Show Answer Correct Answer: A) Blood groups B, AB can receive blood from group B and O. 14. What is the primary role of the lymphatic system? A) Produce red blood cells. B) Regulate blood pressure. C) Transport oxygen. D) Collect interstitial fluid. Show Answer Correct Answer: D) Collect interstitial fluid. 15. The normal blood pressure of a man is about A) 110/80 mm Hg. B) 120/60 mm Hg. C) 120/80 mm Hg. D) 120/70 mm Hg. Show Answer Correct Answer: C) 120/80 mm Hg. 16. Which is correct during each cardiac cycle: A) Volume of blood pumped out by the right and left ventricles is same. B) Volume of blood pumped out by the right and left ventricles are different. C) Volume of blood received by each atrium is different. D) Volume of blood received by the aorta and pulmonary artery is different. Show Answer Correct Answer: A) Volume of blood pumped out by the right and left ventricles is same. 17. Angina pectoris most directly indicates which immediate physiological issue in the heart muscle? A) Blocked venous return. B) Insufficient oxygen supply. C) Overactive pacemaker cells. D) Excess calcium influx. Show Answer Correct Answer: B) Insufficient oxygen supply. 18. Which of the following cells does not exhibit phagocytic activity? A) Macrophage. B) Basophil. C) Neutrophil. D) Monocytes. Show Answer Correct Answer: B) Basophil. 19. Which of the following blood type combinations can leads to erythroblastosis foetalis A) Foetus:Rh+ and mother:Rh-. B) Foetus:Rh+ and mother:Rh+. C) Foetus:Rh-and mother:Rh-. D) Foetus:Rh-and mother:Rh+. Show Answer Correct Answer: A) Foetus:Rh+ and mother:Rh-. 20. During ventricular systole A) Oxygenated blood is pumped into the pulmonary artery and deoxygenated blood is pumped into the artery. B) Oxygenated blood is pumped into the aorta and deoxygenated blood is pumped into the pulmonary vein. C) Oxygenated blood is pumped into the pulmonary vein and deoxygenated blood is pumped into the pulmonary artery. D) Oxygenated blood is pumped into the aorta and deoxygenated blood is pumped into the pulmonary artery. Show Answer Correct Answer: D) Oxygenated blood is pumped into the aorta and deoxygenated blood is pumped into the pulmonary artery. 21. Heaviness with severe chest pain which may disappear with rest indicates A) Myocardial infarction. B) Angina pectoris. C) Ateriosclerosis. D) Atherosclerosis. Show Answer Correct Answer: B) Angina pectoris. 22. Consider the following statements. S 1-Rh$^{+}$ is a dominant character over Rh$^{-}$ in human population.S 2-Thrombokinase convert fibrinogen into fibrin. A) S 1 and S 2 are true. B) S 1 and S 2 are false. C) S 1 is true but S 2 is false. D) S 1 is false but S 2 is true. Show Answer Correct Answer: C) S 1 is true but S 2 is false. 23. Which of the following statements are incorrect?i) Leucocytes disintegrate in spleen and liver.ii) RBCs, WBCs and blood platelets are produced by bone marrow.iii) Neutrophils are non-phagocytic in nature.iv) Important function of lymphocytes is to produce antibodies. A) (i) and (ii). B) (i) and (iv). C) (i) and (iii). D) (ii) and (iii). Show Answer Correct Answer: C) (i) and (iii). 24. Which organ receives only oxygenated blood: A) Lungs. B) Spleen. C) Gills. D) Liver. Show Answer Correct Answer: B) Spleen. ← PreviousRelated QuizzesScience QuizzesClass 11 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 1 The Living World QuizClass 11 Biology Chapter 10 Cell Cycle And Cell Division Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books