Question

trachea;bronchus; alveolus; diaphragm. diaphragm is the odd one out because?

Answer 1

The diaphragm is odd one because the others are parts of lungs. Diaphragm is a stretch of muscle present below lungs.
Hope it helps u.

Answer 2

Diaphragm is present below the lungs whereas others are the parts of lungs...That is why it is odd one.