This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 17 Breathing And Exchange Of Gases – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 11 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following has no specialized respiratory structure: A) Ant. B) Ascaris. C) Crab. D) Salmon. Show Answer Correct Answer: B) Ascaris. 2. Partial pressure of oxygen in atmospheric air is ..... mm HG and in tissues it is ..... mm HG A) 0.3, 40. B) 0.3, 45. C) 40, 159. D) 159, 40. Show Answer Correct Answer: D) 159, 40. 3. What is the primary site of gas exchange in the lungs? A) Alveoli. B) Trachea. C) Bronchi. D) Larynx. Show Answer Correct Answer: A) Alveoli. 4. Gas exchange is needed to supply ..... to cells and remove ..... A) Carbon dioxide; oxygen. B) Oxygen; food. C) Oxygen; carbon dioxide. D) Carbon dioxide; water. Show Answer Correct Answer: C) Oxygen; carbon dioxide. 5. How much O2 is transported in the form of kHbo2? A) 100%. B) 3%. C) 97%. D) 70%. Show Answer Correct Answer: C) 97%. 6. Which of the following situations would result in the greatest degree of O$_{2}$ saturation for haemoglobin, assuming PO$_{2}$ remains constant- A) Increased CO$_{2}$ levels, decreased temperature. B) Increased CO$_{2}$ levels, increased temperature. C) Decreased CO$_{2}$ levels, decreased temperature. D) Decreased CO$_{2}$ levels, increased temperature. Show Answer Correct Answer: C) Decreased CO$_{2}$ levels, decreased temperature. 7. The process of migration of chloride ions from plasma to RBC and of carbonate ions from RBC to plasma is A) Chloride shift. B) Ionic shift. C) Atomic shift. D) Na+ pump. Show Answer Correct Answer: A) Chloride shift. 8. The diaphragm relaxes. A) Inhalation. B) Exhalation. C) All the above. D) None of the above. Show Answer Correct Answer: B) Exhalation. 9. The most common cause of emphysema is? A) Allergies. B) Cigarette smoking. C) Prolonged steroid use. D) Anxiety. Show Answer Correct Answer: B) Cigarette smoking. 10. Bohr Shift describes A) The outward movement of Chloride ions from the blood cell inexchange for bicarbonate ions moving into the cell. B) The rightward shift of the entire oxygen equilibrium curve when pH rises. C) The rightward shift of the entire oxygen equilibrium curve when pH falls. D) The leftward shift of the entire oxygen equilibrium curve when temperature rises. Show Answer Correct Answer: C) The rightward shift of the entire oxygen equilibrium curve when pH falls. 11. The inspiratory capacity includes A) Tidal volume +expiratory reserve volume. B) Tidal volume + inspiratory reserve volume. C) Inspiratory reserve volume + expiratory reserve volume. D) Expirtory reserve volume+ residual volume. Show Answer Correct Answer: B) Tidal volume + inspiratory reserve volume. 12. The branching network of ..... comprise the lungs. A) Bronchi. B) Bronchioles. C) Alveoli. D) All. Show Answer Correct Answer: D) All. 13. Dissociation of oxyhaemoglobin can be promoted by A) Low pCO2. B) High pCO2. C) High blood pH. D) Low body temperature. Show Answer Correct Answer: B) High pCO2. 14. Alveolus loses elasticity and alvelous filled with liquid are symptoms of which disease? A) Emphysema-asthama. B) Emphysema-bronchitis. C) Pneumonia-emphysema. D) Emphysema-pneumonia. Show Answer Correct Answer: D) Emphysema-pneumonia. 15. Why grasshopper can stay alive after it head is put into water? A) Because it has power. B) Because it can breathe through lungs. C) Because it can breathe through moist skin. D) Because spiracle is located at the abdomen. Show Answer Correct Answer: D) Because spiracle is located at the abdomen. 16. Human skin cannot function as a respiratory organ because A) The skin is not exposed to air. B) The skin is not connected to the lungs. C) The skin does not have blood vessels for gas exchange. D) The skin does not have the necessary respiratory structures. Show Answer Correct Answer: D) The skin does not have the necessary respiratory structures. 17. Identify the pathway of air. A) Nasal cavity, throat, bronchioles, bronchi, alveoli. B) Mouth, nasal cavity, bronchi, bronchioles, alveoli. C) Nasal cavity/mouth, trachea, bronchi, bronchus, alveoli. D) Nasal cavity/mouth, trachea, bronchi, bronchioles, alveoli. Show Answer Correct Answer: D) Nasal cavity/mouth, trachea, bronchi, bronchioles, alveoli. 18. Which situation is observed when diaphragm contracts? A) Decrease size of thorax cavity, partial pressure of air increases in lungs. B) Size of thoracic cavity decreases, partial pressure of air decrease in lungs. C) Size of thoracic cavity increases, partial pressure of air increases in lungs. D) Size of thoracic cavity increases, partial pressure of air decreases in lungs. Show Answer Correct Answer: D) Size of thoracic cavity increases, partial pressure of air decreases in lungs. 19. The diaphragm contracts. A) Inhalation. B) Exhalation. C) All the above. D) None of the above. Show Answer Correct Answer: A) Inhalation. 20. Which of the following are features of the alveoli that adapt them to gas exchange?I. High surface areaII. Thin wallsIII. Dry surfaces A) I and II only. B) I only. C) II and III. D) I, II, and III. Show Answer Correct Answer: A) I and II only. 21. Pneumotaxic centre is present in- A) Pons. B) Medulla oblongata. C) Cerebrum. D) Cerebellum. Show Answer Correct Answer: A) Pons. 22. Tidal Volume and Expiratory Reserve Volume of an athlete is 500 mL and 1000 mL, respectively. What will be his Expiratory Capacity if the Residual Volume is 1200 mL? A) 1500 mL. B) 1700 mL. C) 2200 mL. D) 2700 mL. Show Answer Correct Answer: A) 1500 mL. 23. During rest, the metabolic needs of the body are at their minimum. Which of the following is indicative of this situation? A) Rate of breathing. B) O2 intake and CO2 output. C) Pulse rate. D) All of these. Show Answer Correct Answer: D) All of these. 24. How many statements are not true-(1) Any gas travels from its higher partial pressure to its lower partial pressure.(2) Pressure is directly proportional to Volume.(3) External intercostal muscles are involved in forceful expiration(d) Any increase in thoracic cavity will results into increase of Pulmonary cavity. A) 2 statements are correct. B) 3 statements are correct. C) 1 statement is correct. D) All are incorrect. Show Answer Correct Answer: A) 2 statements are correct. 25. Statement I-Oxygen is utilised by the organisms to directly break down of glucose.Statement II-Breathing is commonly called as Respiration. A) Both statement are true. B) Both statement are false. C) I is true but II is false. D) II is true but I is false. Show Answer Correct Answer: D) II is true but I is false. ← 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 7Class 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 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books