This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 18 Body Fluids And Circulation – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 18 Body Fluids And Circulation Quiz 4 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Blood vessel carrying least CO$_{2}$ is A) Pulmonary vein. B) Pulmonary artery. C) Vena cava. D) Hepatic vein. Show Answer Correct Answer: A) Pulmonary vein. 2. The autonomous neutral system could moderate cardiac activity. Select the correct answer. A) The parasympathetic system stimulates the heart rate and stroke volume. B) The sympathetic system stimulates the heart rate and stroke volume. C) The parasympathetic system decreases the heart rate but increases stroke volume. D) The sympathetic system decreases the heart rate but increases stroke volume. Show Answer Correct Answer: B) The sympathetic system stimulates the heart rate and stroke volume. 3. A labeled red blood corpuscle is released into the arterial circulation in the left leg. It is recaptured 30 seconds later in the left lung. What is the minimum number of chambers of the heart it must have passed through? A) 0. B) 1. C) 2. D) 3. Show Answer Correct Answer: C) 2. 4. In ECG, P-R interval corresponds to A) Time delay in AV node. B) SA nodal conduction time. C) Increased ventricular contraction. D) Time interval between onset of ventricular contraction. Show Answer Correct Answer: A) Time delay in AV node. 5. Normal rhythmic activity of the heart generated by nodal tissue is described as what? A) Photogenic. B) Endocrinogenic. C) Myogenic. D) Neurogenic. Show Answer Correct Answer: C) Myogenic. 6. In which of the following situations, there is a risk factor for children acquiring erythroblastosis fetalis? A) Mother is Rh-ve and father is Rh-ve. B) Mother is Rh-ve and father is Rh + ve. C) Mother is Rh + ve and father is Rh +ve. D) Mother is Rh + ve and father is Rh-ve. Show Answer Correct Answer: B) Mother is Rh-ve and father is Rh + ve. 7. Assertion (A)-SA node is called pacesetter of heart .Reason (R)-SA Node is responsible for initiating and maintaining the rhythmic contractile activity of the heart A) A and R are true and R is the true explanation of A. B) A and R are true but R is not the true explanation of A. C) A is true but R is false. D) A is false but R is true. Show Answer Correct Answer: D) A is false but R is true. 8. Which one of the following is correct for 'atherosclerosis'? A) Constriction of arterial lumen reduces the blood flow. B) High blood plasma concentration of cholesterol (LDL) is responsible for this condition. C) Cholesterol deposition at the inner wall of the artery. D) All of these. Show Answer Correct Answer: D) All of these. 9. Which one of the following statements is correct regarding blood pressure? A) 120/80 mmHg is considered high and requires treatment. B) 100/55 mmHg is considered an ideal blood pressure. C) 105/50 mmHg makes one very active. D) 190/110 mmHg may harm vital organs like brain and kidney. Show Answer Correct Answer: D) 190/110 mmHg may harm vital organs like brain and kidney. 10. The stroke volume multiplied by the heart rate gives to A) Cardiac cycle. B) Cardiac input. C) Cardiac output. D) None of the above. Show Answer Correct Answer: C) Cardiac output. 11. WBCs are: A) Non nucleated. B) Nucleated. C) Pigmented. D) Binucleated. Show Answer Correct Answer: B) Nucleated. 12. What is the main component of blood plasma? A) Water. B) Proteins. C) Lymph. D) Erythrocyte. Show Answer Correct Answer: A) Water. 13. RBCs placed in distilled water will: A) Shrink. B) Burst. C) Will remain same. D) Clump. Show Answer Correct Answer: B) Burst. 14. ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. In the ECG of a normal healthy individual, which 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. 15. What is the average number of beats per minute for a healthy heart? A) 90-100. B) 80-90. C) 70-80. D) 60-70. Show Answer Correct Answer: C) 70-80. 16. The opening between the Right atrium and Right ventricle is guarded by A) Bicuspid valve. B) Mitral valve. C) Tricuspid valve. D) Semilunar valve. Show Answer Correct Answer: C) Tricuspid valve. 17. Which of the following factors is known as Christmas factor? A) Factor VIII. B) Factor XII. C) Factor IV. D) Factor IX. Show Answer Correct Answer: D) Factor IX. 18. "Bundle of His" is a network of A) Muscle fibres distributed throughout the heart walls. B) Muscle fibres found only on the ventricle wall. C) Nerve fibres distributed in ventricles. D) Nerve fibres found throughout the heart. Show Answer Correct Answer: B) Muscle fibres found only on the ventricle wall. 19. What happens when the pacemaker becomes non-functional? A) Only auricles contract rhythmically. B) Only ventricles contract rhythmically. C) Cardiac muscles do not undergo co-ordinate rhythmic movements. D) Auricles and ventricles contract rhythmically. Show Answer Correct Answer: C) Cardiac muscles do not undergo co-ordinate rhythmic movements. 20. In the clotting mechanism pathway, thrombin activates the factors A) XI, VIII, V. B) XI, IX, X. C) IX, VIII, X. D) VIII, X, V. Show Answer Correct Answer: A) XI, VIII, V. 21. Assertion (A)-Lymph is a colourless fluidReason (R)-It contains WBCs. 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: B) Both A and R are true and R is not correct explanation of A. 22. A drop of each of the following, is placed separately on four slides. Which of them will not coagulate? A) Blood serum. B) Blood from pulmonary artery. C) Whole blood from pulmonary vein. D) Blood plasma. Show Answer Correct Answer: A) Blood serum. 23. The second heart sound (dub) is associated with the closure of A) Tricuspid valve. B) Semilunar valves. C) Bicuspid valve. D) Tricuspid and bicuspid valves. Show Answer Correct Answer: B) Semilunar valves. 24. Read the following statements and select the correct option.Statement 1:Prothrombin is essential for blood clottingStatement 2:Prothrombin is synthesized in the liver in the presence of Ca$^{++}$. 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) Both statements 1 and 2 are incorrect. Show Answer Correct Answer: B) Statement 1 is correct but statement 2 is incorrect. 25. ASSERTION (A):A Person with blood group 'O' is called universal donorREASON (R):Blood group 'O' person has no antibodies 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. ← 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 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 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