Online MCQs Test – Gaseous Exchange – Biology 10th

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

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

3. Each lung is made up of millions of:

4. Each bronchus have:

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

6. In humans, the process of respiration involves:

7. In the following, the alveoli are infected so they may be filled with fluid or pus.

8. It contains vocal cords to produce sound.

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

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

11. Larynx is located on:

12. The opening of larynx is known as:

13. Inspiration involves:

14. Each lung is soft, spongy and:

15. The respiratory surface of human is:

16. It is regulated by the hypothalamus of our brain.

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

18. Ribs are attached with:

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

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