Online MCQs Test – Gaseous Exchange – Biology 10th

1. Each bronchus have:

2. Respiratory surface possesses the following property:

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

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

5. Plants exchange gases for the process/es of:

6. Each stoma is formed by:

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

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

9. The opening of larynx is known as:

10. Which of the following disorder is associated with inflammation of air passageways?

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

12. It contains vocal cords to produce sound.

13. Each lung is soft, spongy and:

14. The biological functions which perform gaseous exchange:

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

16. Expiration involves:

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

18. In the lower part of the thorax, lies a sheet of muscles called:

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

20. The gaseous exchange takes place at the level of alveoli. This gaseous exchange involves: