Description: Practice Class 10 Biology Chapter 10 MCQs on Gaseous Exchange. These important FBISE Biology MCQs include conceptual, knowledge-based, and exam-oriented questions for board preparation.
1. The process by which organisms take in oxygen and remove carbon dioxide is called:
2. In humans, gaseous exchange mainly occurs in the:
3. Tiny balloon-like structures present in lungs are called:
4. Which gas diffuses from blood into alveoli?
5. The movement of gases occurs due to difference in:
6. The organ responsible for gaseous exchange in fish is:
7. During inhalation, the diaphragm becomes:
8. Which structure prevents food from entering the trachea?
9. The windpipe is scientifically called:
10. Rings of cartilage are present in trachea to:
11. The respiratory pigment in human blood is:
12. Which process releases energy in living organisms?
13. The exchange of gases in plants mainly occurs through:
14. Which muscles help in breathing?
15. Smoking mainly damages the:
16. Which disease is caused by uncontrolled division of lung cells?
17. Inhaled air contains the highest percentage of:
18. The tiny blood vessels surrounding alveoli are called:
19. Which factor increases the efficiency of gaseous exchange in alveoli?
20. During exhalation, ribs move:
21. Which organ connects nasal cavity with larynx?
22. The opening and closing of stomata is controlled by:
23. Oxygen combines with hemoglobin to form:
24. Which respiratory disease is caused by bacterial infection?
25. The process of taking air into lungs is called:
26. Which part of respiratory tract produces sound?
27. Insects perform gaseous exchange through:
28. Which gas is mostly transported by blood plasma?
29. The mucus present in nasal cavity helps to:
30. Which structure directly connects bronchi with alveoli?
31. The diffusion of gases through moist membranes is fastest because gases:
32. Which of the following is NOT a function of nasal cavity?
33. Emphysema mainly affects the:
34. The exchange of gases between blood and tissues occurs by:
35. Which structure in plants is mainly responsible for gaseous exchange in stems?
36. The percentage of oxygen in atmospheric air is approximately:
37. Which condition causes narrowing of air passages in lungs?
38. During vigorous exercise, breathing rate increases to:
39. The voice box in humans is called:
40. Which of the following animals exchanges gases through moist skin?
41. Which component of cigarette smoke is mainly responsible for cancer?
42. The opening through which insects take in air is called:
43. Which blood vessel carries deoxygenated blood from heart to lungs?
44. Which process removes carbon dioxide from the body?
45. Which structure prevents the collapse of bronchi and trachea?
46. Pneumonia mainly affects which organ?
47. Which scientist explained the role of oxygen in respiration?
48. In humans, normal breathing movements are controlled by:
49. Which of the following is an adaptation for efficient gaseous exchange?
50. The primary purpose of respiration is to: