7. The respiratory organs of insects are
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Answer:
Trachea and Spiracles
Explanation:
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.
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Answer:
spiracles
Explanation:
air enters and gaseous exchange through respiratory tract of insects takes place through a series of external opening called spiracles
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