Online MCQs Test – Gaseous Exchange – Biology 10th

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

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

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

4. The respiratory surface of human is:

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

6. The opening of larynx is known as:

7. Each lung is made up of millions of:

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

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

10. Expiration involves:

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

12. The biological functions which perform gaseous exchange:

13. Each bronchus have:

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

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

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

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

18. Stomata are present in:

19. It is wrapped in two pleural membranes.

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