This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 17 Breathing And Exchange Of Gases – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. External intercostals contract. A) Inhalation. B) Exhalation. C) All the above. D) None of the above. Show Answer Correct Answer: A) Inhalation. 2. Emphysema is a condition resulting from A) Cigarette smoking. B) Liquor consumption. C) Drug addiction. D) Reduced oxygen carrying capacity of blood. Show Answer Correct Answer: A) Cigarette smoking. 3. Besides RBC, blood plasma also carries O2 in solution.The percentage is A) 3-9%. B) 1-2%. C) 3-6%. D) 2-3%. Show Answer Correct Answer: D) 2-3%. 4. What if human blood becomes acidic (low pH)? A) The oxygen-carrying capacity of hemoglobin is increased. B) The oxygen-carrying capacity of hemoglobin is reduced. C) Increased red blood cell count. D) Decreased red blood cell count. Show Answer Correct Answer: B) The oxygen-carrying capacity of hemoglobin is reduced. 5. Which of these is a respiratory disease? A) Hemophilia. B) Bronchitis. C) Hypertension. D) Epilepsy. Show Answer Correct Answer: B) Bronchitis. 6. Pick the incorrect statement A) The presence of non-respiratory air sacs increases the efficiency of respiration in birds. B) The residual air in the lungs slightly decreases the efficiency of respiration in mammals. C) The principle of counter current flow facilitates efficient respiration in gills of fishes. D) In insects, circulating body fluids serve to distribute oxygen to tissues. Show Answer Correct Answer: D) In insects, circulating body fluids serve to distribute oxygen to tissues. 7. What is the primary purpose of the respiratory system? A) To circulate blood. B) To exchange gases. C) To digest food. D) To regulate body temperature. Show Answer Correct Answer: B) To exchange gases. 8. RBCs, plasma and biocarbonate are the medium for transport of carbondioxide. Maximum amount of carbon dioxide is carried by(a) RBCs(b) Plasma(c) Bicarbonates(d) All RBCs and bicarbonate carried 70 per cent of carbondixide. A) RBCs. B) Plasma. C) Bicarbonates. D) All RBCs and bicarbonate carried 70 per cent of carbondixide. Show Answer Correct Answer: C) Bicarbonates. 9. A spirometer cannot be used to measure- A) IC. B) RV. C) ERV. D) IRV. Show Answer Correct Answer: B) RV. 10. Which among the parts of an Earthworm acts as their respiratory membrane? A) Gills. B) Spiracles. C) Lungs. D) Skin. Show Answer Correct Answer: D) Skin. 11. Additional volume of air, a person can expire by a forcible expiration is known as Expiratory reserve volume . This averages 1000mL to 1100 mL A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 12. Cartilaginous rings in the respiratory passage are present in A) Trachea only. B) The trachea and initial part of the bronchi only. C) Trachea bronchi and initial part of bronchioles only. D) Trachea, bronchi, and all bronchioles. Show Answer Correct Answer: C) Trachea bronchi and initial part of bronchioles only. 13. At high altitude, the RBCs in the human blood will A) Increase in size. B) Decrease in size. C) Increase in number. D) Decrease in number. Show Answer Correct Answer: C) Increase in number. 14. CO2 is carried in blood by hemoglobin in the form of: A) Sodium bicarbonate. B) Potassium bicarbonate. C) Carbamino compound. D) Methaemoglobin. Show Answer Correct Answer: C) Carbamino compound. 15. Transport of oxygen take place by ..... A) RBC. B) WBC. C) Blood plasma. D) A and c. Show Answer Correct Answer: D) A and c. 16. The part starting with the external nostrils upto the terminal bronchiol.es constitute the- A) Respiratory or exchange part of respiratory system. B) Inspiratory part. C) Conducting part. D) Expiratory part. Show Answer Correct Answer: C) Conducting part. 17. Where is location of respiratory centre with two folds? A) Cerebrum. B) Brain stem. C) Cerebellum. D) Diencephalon. Show Answer Correct Answer: B) Brain stem. 18. After taking a long deep breath we do not respire for some seconds due to A) More CO2 in blood. B) More O2 in blood. C) Less CO2 in blood. D) Less O2 in blood. Show Answer Correct Answer: C) Less CO2 in blood. 19. The partial pressure of oxygen in the alveoli of the lungs ..... ? A) Equal to that in the blood. B) More than that in the blood. C) Less thsan that in the blood. D) Less than that of crbon dioxide. Show Answer Correct Answer: B) More than that in the blood. 20. The trachea leads to the ..... A) Bronchioles. B) Bronchi. C) Esophagus. D) Pulmonary Vessel. Show Answer Correct Answer: B) Bronchi. 21. What is the primary function of the conducting part of the respiratory system? A) Production of sound. B) Transport of air. C) Gas exchange. D) Regulation of breathing. Show Answer Correct Answer: B) Transport of air. 22. Left lung is ..... then the right lung A) Smaller. B) Larger. C) Equal. D) Broader. Show Answer Correct Answer: A) Smaller. 23. If a person exhales out forcefully by applying all his efforts, what will be the pulmonary volume inhaled by him immediately under normal condition without applying any extra effort? A) TV + IRV. B) TV only. C) TV + ERV. D) TV + IRV + ERV. Show Answer Correct Answer: C) TV + ERV. 24. What is the correct order for air entering the lungs? A) Trachea-Bronchi-Bronchioles-Alveoli. B) Trachea-Tracheoles-Bronchi. C) Alveoli-Bronchi-Bronchioles-Spiracles. D) Trachea-Bronchioles-Bronchi-Alveoli. Show Answer Correct Answer: A) Trachea-Bronchi-Bronchioles-Alveoli. 25. Inspiration occurs when there is a negative pressure in the lungs with respect to atmospheric pressure. This negative pressure is achieved when A) Intrapulmonary pressure is less than the atmospheric pressure. B) Intrapulmonary pressure is greater than the atmospheric pressure. C) Intrapulmonary pressure is equal to the atmospheric pressure. D) Intrapleural pressure become more than the intra-alveolar pressure. Show Answer Correct Answer: A) Intrapulmonary pressure is less than the atmospheric pressure. ← PreviousNext →Related QuizzesClass 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 1Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 2Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 3Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 4Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 5Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 6Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 8Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 9Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 10Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books