Online MCQs Test – Gaseous Exchange – Biology 10th

1. The respiratory surface of human is:

2. Each lung is soft, spongy and:

3. Which of the following disorder is associated with degeneration of alveoli?

4. The opening of larynx has a lid like cover called:

5. It is an allergic response to pollens, dust, smoke, fur, feathers and several other substances.

6. The amount of molecular oxygen present in the air is about:

7. The amount of molecular oxygen present in water is about:

8. The process of breathing consists of:

9. Each bronchiole is a very thin tube that opens into:

10. These are microscopic openings present in the epidermis of leaves.

11. The biological functions which perform gaseous exchange:

12. Each bronchus have:

13. It contains vocal cords to produce sound.

14. Increase in rate of breathing is due to the following:

15. Stomata are present in:

16. Lungs can be filled with a maximum amount of:

17. The internal opening of nasal sacs opens into a long tube called:

18. The total surface area of the respiratory surface in human is about.

19. Trachea in the center of the thorax bifurcates into two smaller ducts, called:

20. It is wrapped in two pleural membranes.