This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 17 Breathing And Exchange Of Gases – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 6 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Additional muscles in the ..... impacts the ability of humans to increase the strength of inspiration and expiration. Complete the given statement with an appropriate option. A) Chest. B) Diaphragm. C) Abdomen. D) Lungs. Show Answer Correct Answer: C) Abdomen. 2. Switch off center of breathing lies in A) Carotid bodies. B) Pons. C) Hypothalamus. D) Medulla oblongata. Show Answer Correct Answer: B) Pons. 3. Thechamberformeddorsallybythevertebralcolumn, ventrallybysternum, laterallybyribsandonth~1qwe[sidebydome-shaped diaphragm is- A) Abdominal cavity. B) Pulmonary cavity. C) Thoracic cavity. D) Lung cavity. Show Answer Correct Answer: C) Thoracic cavity. 4. Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because:- A) There is a positive intrapleural pressure. B) Pressure in the lungs is higher than the atomospheric pressure. C) There is a negative pressure in the lungs. D) There is a negative intrapleural pressure pulling at the lung walls. Show Answer Correct Answer: D) There is a negative intrapleural pressure pulling at the lung walls. 5. Larynx is made up of ..... cartilages. Out of Epiglottis is made up of ..... cartilage. Adam's Apple is an extension of ..... cartilage. A) 9, Elastic, thyroid. B) 9, Elastic, epiglottis. C) 9, hyaline, thyroid. D) 11, hyaline, thyroid. Show Answer Correct Answer: A) 9, Elastic, thyroid. 6. A large proportion of oxygen is left unused in the human blood even after uptake by the body tissue. This oxygen A) Is enough to keep oxyhaemoglobin saturation at 96%. B) Helps in releasing more oxygen to epithelial tissues. C) Acts as reserve during muscular exercise. D) Raise pCO2 of blood to 75 mmHG. Show Answer Correct Answer: C) Acts as reserve during muscular exercise. 7. What is the primary transporter of O2 in the blood? A) Plasma. B) Platelets. C) White blood cells. D) Red blood cells. Show Answer Correct Answer: D) Red blood cells. 8. The CO2 content by volume, in the atmospheric air is about A) 3.34%. B) 4%. C) 0.0314%. D) 2.1%. Show Answer Correct Answer: C) 0.0314%. 9. Which region of nasal chamber is near to internal nares? A) Pre olfactory region. B) Respiratory region. C) A and b. D) Olfactory region. Show Answer Correct Answer: D) Olfactory region. 10. What is the term for the volume of air that remains in the lungs after a forcible expiration? A) Inspiratory Reserve Volume. B) Residual Volume. C) Tidal Volume. D) Expiratory Reserve Volume. Show Answer Correct Answer: B) Residual Volume. 11. In earthworm respiration is by A) Lungs. B) Tube feets. C) Skin. D) Tracheal systems. Show Answer Correct Answer: C) Skin. 12. What would happen if human blood becomes acidic (pH lowers)? A) Oxygen carrying capacity of the hemoglobin increases. B) Oxygen carrying capacity of the hemoglobin decreases. C) RBC count increases. D) RBC count decreases. Show Answer Correct Answer: B) Oxygen carrying capacity of the hemoglobin decreases. 13. What is the tidal volume in an adult human? A) 1100 mL. B) 6000 mL. C) 2000 mL. D) 500 mL. Show Answer Correct Answer: D) 500 mL. 14. Expiratory capacity is equal to- A) TV + ERV. B) ERV + IRV. C) ERV + RV. D) ERV + RV. Show Answer Correct Answer: A) TV + ERV. 15. Which one of the following options correctly represents the lung conditions in asthma and emphysema, respectively? A) Increased respiratory surface; Inflammation of bronchioles. B) Increased number of bronchioles; Increased respiratory surface. C) Inflammation of bronchioles; Decreased respiratory surface. D) Decreased respiratory surface; Inflammation of bronchioles. Show Answer Correct Answer: C) Inflammation of bronchioles; Decreased respiratory surface. 16. About 97% of oxygen is transported by RBC, then remaining 3% is ..... A) Retained in lungs. B) Dissolved in plasma and transported. C) Attached to cell membrane. D) Inside mitochondria. Show Answer Correct Answer: B) Dissolved in plasma and transported. 17. The diaphragm becomes dome shaped. A) Inhalation. B) Exhalation. C) All the above. D) None of the above. Show Answer Correct Answer: B) Exhalation. 18. During normal respiration the ventral respiratory group located in the medulla oblongata ..... ? A) Establish the basic respiratory rhythm. B) Controls the switch off point of inspirato n. C) Remains inactive. D) Excites chemosensitive zone nuerons. Show Answer Correct Answer: C) Remains inactive. 19. ..... lies in front of esophagus.(a) Trachea(b) Glottis(c) Larynx(d) Epiglottis A) Trachea. B) Glottis. C) Larynx. D) Epiglottis. Show Answer Correct Answer: A) Trachea. 20. Each molecule of haemoglobin when fully saturated carries how many molecules of O$_{2}$- A) 1. B) 2. C) 4. D) 20. Show Answer Correct Answer: C) 4. 21. Mark the correct pair of muscles involved in the normal breathing in humans. A) External and internal intercostals muscles. B) Diaphragm and abdominal muscles. C) Diaphragm and external intercostals muscles. D) Diaphragm and intercostals muscles. Show Answer Correct Answer: D) Diaphragm and intercostals muscles. 22. Which animal comes in class Amphibia A) Periplaneta. B) Rana. C) Lizard. D) Rohu. Show Answer Correct Answer: B) Rana. 23. Which of them is not a part of lungs A) BRONCHI. B) TRACHEA. C) ALVEOLI. D) NONE OF THE ABOVE. Show Answer Correct Answer: B) TRACHEA. 24. At respiring tissues, why does an increase in pCO$_{2}$ cause hemoglobin to have a decreased affinity for oxygen?I. H$^{+}$ bind to hemoglobin causing a shape changeII. CO$_{2}$ dissolves in blood plasma to form carbonic acidIII. CO$_{2}$ removes the heme groups from hemoglobin A) I and II only. B) I and III only. C) II and III only. D) I, II and III. Show Answer Correct Answer: A) I and II only. 25. We can test the presence of carbon dioxide in exhaled air by bubbling it into ..... A) Limewater. B) Lime juice. C) Lime. D) Water. Show Answer Correct Answer: A) Limewater. ← 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 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 10Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books