Question

In human beings, gas exchange between the environment and the body takes
place in the :
a) larynx
b) bronchi
c) alveoli
d) trachea

Answer 1

Answer:

In human beings gaseous exchange occurs in alveoli.(c)

Answer 2

Answer:

C) alveoli

Explanation:

Alveoli are very thin, irregular-walled and vascularised bag like the structure of the respiratory tract. Alveoli is the primary site for exchanging of gases. Alveoli and their ducts form the exchange part of the respiratory system. The conducting part of the respiratory system receives the atmospheric air and humidifies it, clears  from foreign particles and also brings the air to body temperature and then transports this air to the exchanging part. Exchange is due to the diffusion of oxygen and carbon dioxide across the alveolar membrane.