This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 18 Body Fluids And Circulation – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 18 Body Fluids And Circulation Quiz 3 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. During recording electrocardiogram patient is connected to 3 electrical leads . there positions are: A) Both wrists and left ankle. B) Left wrist and both ankles. C) 1 on chest, 1 on wrist and 1 on ankle. D) Both wrists and right ankle. Show Answer Correct Answer: A) Both wrists and left ankle. 2. What is the average lifespan of a red blood cell? A) 60 days. B) 180 days. C) 30 days. D) 120 days. Show Answer Correct Answer: D) 120 days. 3. ..... Is comparatively thin in the veins as compared to arteries. A) Tunica intima. B) Tunica media. C) Tunica externa. D) All of the above. Show Answer Correct Answer: B) Tunica media. 4. Pacemaker is situated in the A) Wall of right atrium. B) Interauricular septum. C) Interventricular septum. D) Wall of left atrium. Show Answer Correct Answer: A) Wall of right atrium. 5. Papillary muscles are found in A) Sinus venosus. B) Ventricles. C) Dorsal aorta. D) Auricles. Show Answer Correct Answer: B) Ventricles. 6. Human heart is called myogenic because A) It is auto excitable by the nodal musculature. B) It contracts only in response to adrenal hormones. C) It is controlled by the brain. D) It depends on external neural signals for excitation. Show Answer Correct Answer: C) It is controlled by the brain. 7. Which of the following organisms has an open circulatory system? A) A human. B) A cat. C) A bee. D) An earthworm. Show Answer Correct Answer: C) A bee. 8. In Birds, the ..... 1 ..... atrium receives oxygenated blood from the lungs and ..... B ..... atrium gets the ..... C ..... blood from other body parts. Choose the correct option for A, B and C A) A-RightB-left C-Oxygenated. B) A-LeftB-rightC-deoxygenated. C) A-leftB-Right C-Oxygenated. D) A-RightB-left C-deoxygenated. Show Answer Correct Answer: B) A-LeftB-rightC-deoxygenated. 9. Assertion (A)-1st child of Rh$^{+}$ husband and Rh$^{-}$ wife does not show erythroblastosis foetalis.Reason (R)-Due to the absence of antibodies against Rh antigen in mother's blood . 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 R is false. D) A is false R is true. Show Answer Correct Answer: A) Both A and R are true and R is correct explanation of A. 10. Blood pressure in the mammalian aorta is maximum during: A) Systole of the left atrium. B) Diastole of the right ventricle. C) Systole of the left ventricle. D) Diastole of the right atrium. Show Answer Correct Answer: C) Systole of the left ventricle. 11. Adult human RBCs are enucleated. Which of the following statement(s) is/are most appropriate explanation for this feature?I. They are somatic cellsII. They do not need to reproduceIII. All their internal space is available to transport oxygenIV. They do not metabolize A) I, II, and IV. B) III and IV. C) Only III. D) Only I. Show Answer Correct Answer: C) Only III. 12. Which of the following statement(s) regarding the cardiac system is/are correct?i) Human heart is an ectodermal derivativeii) Mitral valve guards the opening between the right atrium and left ventricle.iii) SAN is located on the left upper corner of the right atriumiv) Stroke volume x Heart rate = Cardiac output A) (i) only. B) (i) and (ii). C) (ii) and (iii). D) (iv) only. Show Answer Correct Answer: D) (iv) only. 13. S 1-The number of action potentials that could be generated in a minute is same at different parts of the nodal system.S 2-AV node is present in right upper corner of the right atrium 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: B) S 1 and S 2 are false. 14. What is the primary function of lymph? A) Regulate body temperature. B) Carry nutrients and hormones. C) Store waste products. D) Transport oxygen. Show Answer Correct Answer: B) Carry nutrients and hormones. 15. Ratio of RBC/WBC in humans: A) 6000:1. B) 6:1. C) 60:1. D) 600:1. Show Answer Correct Answer: D) 600:1. 16. The spleen is also called as: A) Oxygen bank. B) Iron storage. C) Graveyard of RBCs. D) Blood factory. Show Answer Correct Answer: C) Graveyard of RBCs. 17. Myocardium is made up of: A) Smooth muscles. B) Dense irregular connective tissue. C) Cardiac muscless. D) Simple squamous epithelium. Show Answer Correct Answer: A) Smooth muscles. 18. Which phase of the ECG indicates ventricular excitation and contraction? A) T wave. B) QRS wave. C) P wave. D) XYZ wave. Show Answer Correct Answer: B) QRS wave. 19. An open circulatory system does not have A) Capillaries. B) Blood vessels. C) Tissue fluid. D) A heart. Show Answer Correct Answer: A) Capillaries. 20. Which agranulocyte is phagocytic in nature? A) Lymphocytes. B) Monocytes. C) Neutrophils. D) Leucocytes. Show Answer Correct Answer: B) Monocytes. 21. ..... Increases the pressure causing the closure of tricuspid and bicuspid valve A) Ventricular systole. B) Atrial diastole. C) Atrial systole. D) Ventricular diastole. Show Answer Correct Answer: A) Ventricular systole. 22. Leucocyte plays an important role in A) Phagocytosis. B) Production of antibodies. C) Inflammatory reactions. D) All of the above. Show Answer Correct Answer: D) All of the above. 23. Which type of blood cell is responsible for gas transport? A) Lymphocytes. B) Erythrocytes. C) Platelets. D) Leucocytes. Show Answer Correct Answer: B) Erythrocytes. 24. The colour of plasma is A) Brick red. B) Pale orange. C) Pale yellow. D) Bright orange. Show Answer Correct Answer: C) Pale yellow. 25. Which of the following is absent in blood: A) Plasma. B) Formed elements. C) Fibroblast. D) Fluid matrix. Show Answer Correct Answer: C) Fibroblast. 26. Gliobulin function A) Defence mechanism. B) Clotting of blood. C) Osmotic balance. D) Allergic reactions. Show Answer Correct Answer: A) Defence mechanism. 27. ASSERTION (A):Mixing of oxygenated and deoxygenated blood occur in reptilian and amphibian hearts.REASON (R):This happens because of the incomplete partitioning of the atrium 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 R is false. D) A is false R is true. Show Answer Correct Answer: C) A is true R is false. 28. What is the primary role of the inter-ventricular septum? A) Controls heart rate. B) Regulates blood flow. C) Separates the atria. D) Separates the ventricles. Show Answer Correct Answer: D) Separates the ventricles. 29. What is an advantage of an open circulatory system? A) It uses less metabolic energy. B) It enables an organism to move faster. C) It is a more efficient way to move gases, nutrients, and waste around an organism's body. D) It allows organisms to grow larger. Show Answer Correct Answer: A) It uses less metabolic energy. 30. In veins, valves are present to check backward flow of blood flowing at A) Atmospheric pressure. B) High pressure. C) Low pressure. D) All of these. Show Answer Correct Answer: C) Low pressure. 31. Blood enters into the heart because muscles of: A) Atria relax. B) Ventricles relax. C) Atria contract. D) Ventricles contract. Show Answer Correct Answer: A) Atria relax. 32. Which of the following is responsible for the transport of oxygen in the human body? A) Thrombocytes. B) Erythrocyte. C) Leucocyte. D) Pleural fluid. Show Answer Correct Answer: B) Erythrocyte. 33. S 1-Though the heart is autoexcitable, its functions can be moderated by neural and hormonal mechanisms.S 2-The systemic circulation starts from right ventricle and ends on left atrium. 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. 34. CO has greater affinity for Hb as compared to O2: A) 2 times. B) 1000 times. C) 200 times. D) 20 times. Show Answer Correct Answer: C) 200 times. 35. Which type of white blood cell is primarily involved in defense mechanisms? A) Thrombocytes. B) Erythrocytes. C) Platelets. D) Leucocytes. Show Answer Correct Answer: D) Leucocytes. 36. The percentage of Lymphocytes in Total leucocytes is- A) 6-8. B) 60-65. C) 20-25. D) 2-3. Show Answer Correct Answer: C) 20-25. 37. Lymph (tissue fluid) is composed of A) Plasma. B) Large proteins. C) Formed elements. D) All of them. Show Answer Correct Answer: A) Plasma. 38. Leukopenia is a condition of A) Increase in WBC production. B) Decrease in WBC production. C) Increase in RBC production. D) Decrease in RBC production. Show Answer Correct Answer: B) Decrease in WBC production. 39. Which protein is responsible for oxygen transport in the blood? A) Fibrinogen. B) Albumin. C) Hemoglobin. D) Myosin. Show Answer Correct Answer: C) Hemoglobin. 40. Match the plasma protein with its function-a. Albumin 1. Clotting b. Fibrinogen 2. Defense c. Globulin 3. Osmotic balance A) -3b.-2c.-1. B) -3b.-1c.-2. C) -1b.-2c.-3. D) -2b.-1c.-3. Show Answer Correct Answer: B) -3b.-1c.-2. 41. Spiracle can be observed in A) Reptiles. B) Arthropoda. C) Echinodermata. D) Mollusca. Show Answer Correct Answer: B) Arthropoda. 42. Conversion of fibrinogen to fibrin is catalysed by A) Thrombin. B) Prothrombin. C) Thromboplastin. D) All of these. Show Answer Correct Answer: A) Thrombin. 43. Rh antigen is first found in A) Rat. B) Human. C) Cat. D) Monkey. Show Answer Correct Answer: D) Monkey. 44. The inter-atrial septum is best described as: A) A thin muscular wall. B) A thin fibrous tissue. C) A thick muscular wall. D) A thick fibrous tissue. Show Answer Correct Answer: A) A thin muscular wall. 45. What does the pulmonary artery carry? A) Oxygenated blood from the heart to the lungs. B) Deoxygenated blood from the lungs to the heart. C) Oxygenated blood from the lungs to the heart. D) Deoxygenated blood from the heart to the lungs. Show Answer Correct Answer: D) Deoxygenated blood from the heart to the lungs. 46. Which of the following is the occupational respiratory disease: A) Emphysema. B) Anthracis. C) Botulism. D) Silicosis. Show Answer Correct Answer: D) Silicosis. 47. Which of the following statements best defines the open circulatory system? A) In an open circulatory system, blood mixes with interstitial fluid in the hemocoel. B) In an open circulatory system, the blood is separated from the bodily interstitial fluid and contained blood vessels. C) Blood circulates unidirectionally from the heart around systemic circulatory root. D) An open circulatory system uses more energy than a closed circulatory system. Show Answer Correct Answer: A) In an open circulatory system, blood mixes with interstitial fluid in the hemocoel. 48. Cardiac centre can moderate the cardiac functions through A) Parasympathetic nervous system only. B) Somatic neural system. C) Sympathetic nervous system only. D) Autonomic nervous system (ANS). Show Answer Correct Answer: D) Autonomic nervous system (ANS). 49. Pace maker is situated in heart ..... A) In the wall of right atrium. B) On interauricular septum. C) On interventricular septum. D) In the wall of left atrium. Show Answer Correct Answer: A) In the wall of right atrium. 50. Universal acceptor has following antibodies: A) Anti-A. B) Anti-B. C) Anti-A and anti-B. D) No antibodies. Show Answer Correct Answer: D) No antibodies. 51. What is the lifespan of red blood cells (RBCs) in humans? A) 200 days. B) 60 days. C) 30 days. D) 120 days. Show Answer Correct Answer: D) 120 days. 52. Which of the following is the primary component of human blood? A) Platelets. B) RBCs. C) WBCs. D) Plasma. Show Answer Correct Answer: D) Plasma. 53. 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. 54. 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. 55. 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. 56. The universal donor blood group is: A) B. B) AB. C) A. D) O. Show Answer Correct Answer: D) O. 57. 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. 58. Eosinophills helps in: A) Clotting. B) Resisting infection. C) Digestion. D) Inflammatory reactions. Show Answer Correct Answer: D) Inflammatory reactions. 59. 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) O. D) B. Show Answer Correct Answer: C) O. 60. During fibrinolysis, which enzyme induces lysis of fibrinogen to fibrin? A) Plasmin. B) Thrombin. C) Heparin. D) Trypsin. Show Answer Correct Answer: B) Thrombin. ← PreviousNext →Related 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 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 1 The Living World QuizClass 11 Biology Chapter 10 Cell Cycle And Cell Division Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books