Question

Is not a part of respiratory system nose. Food pipe . diaghragm. Lungs

Answer 1

The organ which is not a part of the respiratory system among the following options is food pipe or oesophagus.

This is because through the food pipe, the food particles are transferred from our mouth to the stomach for digestion, that is why it is a part of the digestive system.

Whereas nose, diaphragm and lungs takes part in respiration so they are parts of the respiratory system.