This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 17 Breathing And Exchange Of Gases – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 12 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Approximately seventy percent of carbon dioxide absorbed by the blood will be transported to the lungs: ..... A) By binding to R.B.C. B) As carb amino-haemoglobin. C) As bicarbonate ions. D) In the form of dissolved gas molecule. Show Answer Correct Answer: C) As bicarbonate ions. 2. Total volume of air a person can expire after a normal inspiration? A) Only TV. B) TV + ERV. C) TV + IRV. D) TV + IRV + ERV. Show Answer Correct Answer: B) TV + ERV. 3. Identify the correct statement with reference to transport of respiratory gases by blood. A) Haemoglobin is necessary for transport of carbon dioxide and carbonic anhydrase for transport of oxygen. B) Haemoglobin is necessary for transport of oxygen and carbonic anhydrase for transport of carbon dioxide. C) Only oxygen is transported by blood. D) Only carbon dioxide is transported by blood. Show Answer Correct Answer: B) Haemoglobin is necessary for transport of oxygen and carbonic anhydrase for transport of carbon dioxide. 4. Epithelium present in the trachea is: A) Ciliated cuboidal epithelium. B) Pseudostratified ciliated coloumnar glandular epithelium. C) Pseudostratified epithelium. D) Ciliated coloumnar epithelium. Show Answer Correct Answer: B) Pseudostratified ciliated coloumnar glandular epithelium. 5. Type 1 pneumocytes are made up of: A) Cuboidal epithelium. B) Simple squamous epithelium. C) Lecithin. D) Yellow fibrous connective tissue. Show Answer Correct Answer: B) Simple squamous epithelium. 6. Bulk of oxygen diffuses from the plasma into the red blood corpuscles where it joins loosely with Fe2+ ions of haemoglobin (Hb) to form bright red oxyhaemoglobin (HbO2). This process is called A) Oxidation. B) Oxygenation. C) Hydration. D) Dehydrogenation. Show Answer Correct Answer: B) Oxygenation. 7. Which one of the following can bind several hundred times more strongly to the haemoglobin than oxygen? A) H2 CO3. B) CO2. C) CO. D) None of these. Show Answer Correct Answer: C) CO. 8. What is the role of the alveoli in the respiratory system? A) To produce mucus. B) To filter dust particles. C) To transport air. D) To facilitate gas exchange. Show Answer Correct Answer: D) To facilitate gas exchange. 9. In lungs, the air is separated from the venous blood through A) Transitional epithelium+ tunica external of blood vessel. B) Squamous epithelium + endothelium of blood vessel. C) Squamous epithelium + tunica media of blood vessel. D) None of these. Show Answer Correct Answer: B) Squamous epithelium + endothelium of blood vessel. 10. Cartilagenous tissues in the structure A) Trachea. B) Bronchus. C) Primary bronchiole. D) A and c both. Show Answer Correct Answer: D) A and c both. 11. Neural control of breathing is in the A) Cerebrum. B) Diaphragm. C) Medulla. D) Olfactory lobe. Show Answer Correct Answer: C) Medulla. 12. Mammalian lungs are A) Hollow. B) Solid & spongy. C) Spongy. D) None. Show Answer Correct Answer: B) Solid & spongy. 13. Vol of the air that will remain in the lungs after normal expiration ..... ? A) 1200 ml. B) 2300ml. C) 4600ml. D) 5800ml. Show Answer Correct Answer: B) 2300ml. 14. ERV+RV represents A) IC. B) EC. C) FRC. D) TLC. Show Answer Correct Answer: C) FRC. 15. Besides PO2 the other factor(s) affecting the binding of O2 with haemoglobin is / are- A) PCO$_{2}$. B) H$^{ +}$ conc. C) Temperature. D) All. Show Answer Correct Answer: D) All. 16. A flap of tissue that closes when we eat so food doesn't not go down the trachea A) Larynx. B) Pharynx. C) Trachea. D) Epiglottis. Show Answer Correct Answer: D) Epiglottis. 17. The amount of O2 delivered by 100 ml blood to the tissue under normal physiological condition:(1) (2)(3) (4) A) 200 ml. B) 5 ml. C) 1.34 ml. D) 20 ml. Show Answer Correct Answer: B) 5 ml. 18. Which of the following is true for CO2 concentration? A) More in alveolar air than in expired air. B) More in expired air than in alveolar air. C) More in inspired air than in alveolar air. D) More in inspired air than in expired air. Show Answer Correct Answer: A) More in alveolar air than in expired air. 19. The factor which does not affect the rate of alveolar diffusion is A) Solubility of gases. B) Thickness of membrane. C) Pressure gradient. D) Reactivity of gases. Show Answer Correct Answer: D) Reactivity of gases. 20. During swollowing ..... is covered by thin cartilagenous flap called ..... A) Larynx, epiglottis. B) Glottis, epiglottis. C) Trachea, epiglottis. D) Oesophagus, gullet. Show Answer Correct Answer: B) Glottis, epiglottis. 21. The muscular organ that holds the vocal chords is the ..... A) Epiglottis. B) Pharynx. C) Larynx. D) Trachea. Show Answer Correct Answer: C) Larynx. 22. Pulmonary ventilation is: A) Breathing. B) Exchange of CO2 & O2 between lungs and atmosphere. C) Physical process. D) All. Show Answer Correct Answer: D) All. 23. How long can humans survive without oxygen? A) 30 seconds. B) 9-10 minutes. C) 1-2 minutes. D) 4-6 minutes. Show Answer Correct Answer: D) 4-6 minutes. 24. What is the length of trachea in humans? A) 10inched. B) 10-11inches. C) 10-11cms. D) 10cm. Show Answer Correct Answer: C) 10-11cms. 25. What is the function of the bronchi in the respiratory system? A) To facilitate gas exchange. B) To produce sound. C) To transport air to the lungs. D) To filter air. Show Answer Correct Answer: C) To transport air to the lungs. ← 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