Question

which of these is a respiratory organ of insects 1)nose 2) gills 3) lungs 4) spiracles ​

Answer 1

Answer:

4

Explanation:

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Answer 2

The respiratory organ of the insects consists of a system of air-filled tubes, called the tracheae, which are in most cases in open connexion with the outside air through openings in the body wall, the spiracles

so your answer is spiracles...