Question

17. Which of the following is not a part ofrespiratory tract?
1. Nasal cavity
2. Pharynx
3. Alveoli
4. oesophagus​

Answer 1

Oesophagus (food pipe)  is not a part of respiratory tract

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Answer 2

Answer:

Option 4 - Oesophagus

Explanation:

Oesophagus is a food pipe which allows only the passage for food and is not a respiratory tract.

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