This quiz works best with JavaScript enabled. Home > Class 11 > 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 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Gliobulin function A) Defence mechanism. B) Clotting of blood. C) Osmotic balance. D) Allergic reactions. Show Answer Correct Answer: A) Defence mechanism. 2. 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. 3. What is the primary role of the inter-ventricular septum? A) Regulates blood flow. B) Separates the ventricles. C) Controls heart rate. D) Separates the atria. Show Answer Correct Answer: B) Separates the ventricles. 4. 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. 5. 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. 6. Blood enters into the heart because muscles of: A) Atria relax. B) Ventricles contract. C) Ventricles relax. D) Atria contract. Show Answer Correct Answer: A) Atria relax. 7. Which of the following is responsible for the transport of oxygen in the human body? A) Erythrocyte. B) Pleural fluid. C) Leucocyte. D) Thrombocytes. Show Answer Correct Answer: A) Erythrocyte. 8. 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. 9. CO has greater affinity for Hb as compared to O2: A) 1000 times. B) 200 times. C) 20 times. D) 2 times. Show Answer Correct Answer: B) 200 times. 10. Which type of white blood cell is primarily involved in defense mechanisms? A) Erythrocytes. B) Platelets. C) Leucocytes. D) Thrombocytes. Show Answer Correct Answer: C) Leucocytes. 11. The percentage of Lymphocytes in Total leucocytes is- A) 60-65. B) 2-3. C) 6-8. D) 20-25. Show Answer Correct Answer: D) 20-25. 12. Lymph (tissue fluid) is composed of A) Plasma. B) Large proteins. C) Formed elements. D) All of them. Show Answer Correct Answer: A) Plasma. 13. Leukopenia is a condition of A) Decrease in WBC production. B) Decrease in RBC production. C) Increase in WBC production. D) Increase in RBC production. Show Answer Correct Answer: A) Decrease in WBC production. 14. Which protein is responsible for oxygen transport in the blood? A) Albumin. B) Hemoglobin. C) Fibrinogen. D) Myosin. Show Answer Correct Answer: B) Hemoglobin. 15. Match the plasma protein with its function-a. Albumin 1. Clotting b. Fibrinogen 2. Defense c. Globulin 3. Osmotic balance A) -2b.-1c.-3. B) -1b.-2c.-3. C) -3b.-2c.-1. D) -3b.-1c.-2. Show Answer Correct Answer: D) -3b.-1c.-2. 16. Spiracle can be observed in A) Mollusca. B) Echinodermata. C) Reptiles. D) Arthropoda. Show Answer Correct Answer: D) Arthropoda. 17. Conversion of fibrinogen to fibrin is catalysed by A) Thrombin. B) Prothrombin. C) Thromboplastin. D) All of these. Show Answer Correct Answer: A) Thrombin. 18. Rh antigen is first found in A) Human. B) Cat. C) Rat. D) Monkey. Show Answer Correct Answer: D) Monkey. 19. 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. 20. What does the pulmonary artery carry? A) Deoxygenated blood from the heart to the lungs. B) Oxygenated blood from the heart to the lungs. C) Deoxygenated blood from the lungs to the heart. D) Oxygenated blood from the lungs to the heart. Show Answer Correct Answer: A) Deoxygenated blood from the heart to the lungs. 21. Which of the following is the occupational respiratory disease: A) Anthracis. B) Silicosis. C) Botulism. D) Emphysema. Show Answer Correct Answer: B) Silicosis. 22. 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. 23. Cardiac centre can moderate the cardiac functions through A) Somatic neural system. B) Parasympathetic nervous system only. C) Autonomic nervous system (ANS). D) Sympathetic nervous system only. Show Answer Correct Answer: C) Autonomic nervous system (ANS). 24. 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. 25. 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. ← 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 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