Home PYQs UPPSC UPPSC MCQs Prelims 2021 (GS Paper I)

Question

Site of gaseous exchange in lungs is:

  1. Tracheoles
  2. Bronchioles
  3. Pulmonary vein
  4. Alveoli

Answer:

Option D: Alveoli

Detailed Solution:

The correct answer is “Alveoli”.

The alveoli are the key structures in the lungs where the exchange of gases—oxygen and carbon dioxide—occurs during the breathing process.