Biology
Grade-6
Easy

Question

The exchange of gases takes place in

  1. Trachea
  2. Alveoli
  3. Uterus
  4. Pharynx

hintHint:

The exchange of gases is a crucial step in respiration. It occurs inside the lungs.

The correct answer is: Alveoli


    • The exchange of gases takes place in alveoli.
    • The respiratory system is an organized system of the body that helps in the inhalation of oxygen and the removal of carbon dioxide from the body. 
    • It consists of the lungs, trachea, bronchi, bronchioles, etc. The lungs themselves consist of alveoli. These are small structures that are responsible for the exchange of gases. 
    • When we inhale, oxygen gets diffused into these alveoli and carbon dioxide is removed from the body. This exchange of gas ensures that the process of respiration takes place properly. 

    The alveoli have more concentration of carbon dioxide as compared to oxygen to creat a concentration gradient.

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