This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 18 Body Fluids And Circulation – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 18 Body Fluids And Circulation Quiz 1 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the primary function of globulins in plasma? A) Transport nutrients. B) Defense mechanisms. C) Aid in blood clotting. D) Regulate blood pressure. Show Answer Correct Answer: B) Defense mechanisms. 2. Q3) Adult human RBCs are enucleate. Which of the following statement(s) is/are most appropriate explanation for this feature?(a) They do not need to reproduce(b) They are somatic cells(c) They do not metabolize(d) All their internal space is available for oxygen transport A) Only (d). B) Only (a). C) (a), (c) and (d). D) (b) and (c). Show Answer Correct Answer: A) Only (d). 3. Assertion (A)-Wall of the ventricles are much thicker than that of atrium.Reason (R)-They have to pump blood to various organs and the pressure flowing in them is more than that of 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: A) Both A and R are true and R is correct explanation of A. 4. What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL? A) 50 beats per minute. B) 75 beats per minute. C) 100 beats per minute. D) 125 beats per minute. Show Answer Correct Answer: C) 100 beats per minute. 5. What is the role of calcium ions in blood coagulation? A) Promote oxygen transport. B) Activate clotting factors. C) Enhance nutrient absorption. D) Regulate heart rate. Show Answer Correct Answer: B) Activate clotting factors. 6. S 1-Blood is a specialised connective tissueS 2-It consist of solid matrix. A) S 1 and S 2 both are true. B) S 1 and S 2 both 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. 7. Fill in the blanks-Incomplete Double circulation ..... (1) ..... Single circulation ..... (2) ..... Complete Double circulation ..... (3) ..... A) Fishes(2) Amphibians(3) Birds. B) Reptiles(2) Fishes(3) Mammals. C) Reptiles(2) Amphibians(3) Birds. D) Mammals(2) Fishes(3) Birds. Show Answer Correct Answer: B) Reptiles(2) Fishes(3) Mammals. 8. What is erythroblastosis foetalis? A) A type of heart disease. B) A respiratory condition. C) A blood clotting disorder. D) A condition caused by Rh incompatibility. Show Answer Correct Answer: D) A condition caused by Rh incompatibility. 9. Which layer of the wall of the blood vessels is made up of circular smooth muscle? A) Outer. B) Middle. C) Inner. D) Both a and b. Show Answer Correct Answer: B) Middle. 10. Arteries are best defined as the vessels which A) Supply oxygenated blood to the different organs. B) Carry blood away from the heart to different organs. C) Break up into capillaries which reunite to form a vein. D) Carry blood from one visceral organ to another visceral organ. Show Answer Correct Answer: B) Carry blood away from the heart to different organs. 11. Asthma disease is related with A) Inflammation of bronchi and bronchioles. B) Inflammation of Alveoli. C) Inflammation of Diaphragm. D) Inflammation of Thoracic chamber. Show Answer Correct Answer: A) Inflammation of bronchi and bronchioles. 12. ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. In the ECG of a normal healthy individual 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. 13. Person with blood group AB is considered a universal recipient because he has A) Both A and B antigens in the plasma but no antibodies. B) Both A and B antibodies in the plasma. C) Both A and B antigens on RBC but no antibodies in the plasma. D) No antigen on RBC and no antibody in the plasma. Show Answer Correct Answer: C) Both A and B antigens on RBC but no antibodies in the plasma. 14. During acute myocardial infarction, which of the following changes occurs in the ECG? A) Flattened T wave. B) Depressed S-T segment. C) Elevated S-T segment. D) Increased length of PQ interval. Show Answer Correct Answer: C) Elevated S-T segment. 15. What is the approximate volume of blood in an average adult human? A) 2 litres. B) 5 litres. C) 8 litres. D) 10 litres. Show Answer Correct Answer: B) 5 litres. 16. Erythroblastosis foetalis occurs when ..... from mother passes to child through the placenta? A) Anti-Rh antibodies. B) Rh antigen. C) ABO antibodies. D) Calcium ion. Show Answer Correct Answer: A) Anti-Rh antibodies. 17. The duration of cardiac cycle in a normal man is- A) 0.8 seconds. B) 80 seconds. C) 60 seconds. D) 72 seconds. Show Answer Correct Answer: A) 0.8 seconds. 18. The exchange of the gases at the surface of alveoli takes place through A) Osmosis. B) Active transport. C) Simple diffusion. D) All of these. Show Answer Correct Answer: C) Simple diffusion. 19. Which part of the heart is known as the pacemaker? A) Purkinje fibers. B) Bundle of His. C) Atrioventricular node. D) Sinoatrial node. Show Answer Correct Answer: D) Sinoatrial node. 20. Read the following statements and select the correct option.Statement 1:The SA node acts as pacemaker.Statement 2:The SA node is located in the wall of the right atrium near the interatrial septum. A) Both statement 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. 21. Mitral valve in mammals guide the opening between: A) LA&LV. B) RA&LV. C) LA&RV. D) RA&RV. Show Answer Correct Answer: A) LA&LV. 22. Doctors use stethoscope to hear the sound; produced during each cardiac cycle. The second sound is heard when A) AV node receives signal from SA node. B) AV valves open up. C) Ventricular walls vibrate due to gushing of blood from atria. D) Semilunar valves close down after the blood flows into vessels from ventricles. Show Answer Correct Answer: D) Semilunar valves close down after the blood flows into vessels from ventricles. 23. If due to some injury the chordae tendineae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect? A) The flow of blood into the aorta will be slowed down. B) The blood will tend to flow back into the left atrium. C) The 'pacemaker' will stop working. D) The flow of blood into the pulmonary artery will be reduced. Show Answer Correct Answer: D) The flow of blood into the pulmonary artery will be reduced. 24. What does the QRS complex in an ECG represent? A) Electrical activity of the atria. B) Resting state of the heart. C) Ventricular contraction. D) Atrial contraction. Show Answer Correct Answer: C) Ventricular contraction. 25. Assertion. In arthropods, especially in insects, respiration is very efficient. Reason. Insects have a special tracheal system. In this air is carried directly to the cells by tracheoles. A) Both Assertion and Reason are true and Reason is the correct explanation of Assertion. B) Both 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: A) Both Assertion and Reason are true and Reason is the correct explanation of Assertion. Next →Related QuizzesClass 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 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