Draw a diagram of human respiratory system and label the following:

Question

(i) Draw a diagram of human respiratory system and label the following:
(a) part where air is filtered by fine hair and mucus.
(b) part which terminates in balloon-like structures.
(c) baloon-like structures where exchange of gases takes place.
(d) part which separates chest cavity from abdominal cavity.
(ii) Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms?

Answer 1

(i) 

Label:
(a) Nasal passage
(b) Bronchioles
(c) Alveoli
(d) Diaphragm

(ii) The amount of dissolved oxygen in water bodies is fairly low as compared to amount of oxygen in the air. Therefore, the rate of breathing in aquatic organisms is much faster than that in terrestrial organisms. So as to meet the oxygen demands.