What is the main respiratory organ for gaseous exchange on land?

What is the main respiratory organ for gaseous exchange on land?
  1. Buccal cavity
  2. Skin
  3. Lungs
  4. Nostrils

Solution

The lungs are the main respiratory organs for gaseous exchange on land. Air enters through the nostrils into the buccal cavity and then to the lungs, where oxygen is exchanged for carbon dioxide during the process of pulmonary respiration. Aestivation and hibernation are states of reduced activity in which gaseous exchange may also take place through the skin.

Asked in: NCERT

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