In insects, respiratory gas exchange occurs through:

Gills

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Tracheae

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Skin

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Lungs

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Solution

The correct option is C Tracheae
Gaseous exchange in insects occurs through a system of air-filled internal tubes, the tracheal system, the finer branches of which extend to all parts of the body and may become functionally intracellular in muscle fibres. Thus, oxygen is carried in the gas phase directly to its sites of utilization.
So, the correct answer is 'Tracheae'.

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