Question

which one is odd one ? nostrils, trachea, lungs, nerves.
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Answer 1

The odd one is nerves.

Explanation:

• Nostrils, trachea and lungs are all a part of the respiratory system. The air enters the body through the nostrils and the mucus in the nostrils traps dust in it.
• The trachea is the passage from where the lung passes from the nostrils to the lungs.
• The lungs are the site where oxygenated blood is kept and transported to the body.
• Nerves are not a part of the respiratory system. Rather, they are a part of the circulatory system.
• Hence, nerves are the odd one out.

Answer 2

The Odd one is nerves.

Reason :

All other except Nerves are related to Respiratory System