Question

3. How does respiration take place in insect?​

Answer 1

AnSwEr

Air enters the respiratory systems of insects through a series of external openings called spiracles. These external openings, which act as muscular valves in some insects, lead to the internal respiratory system, a densely networked array of tubes called tracheae.

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Answer 2

Insects have spiracles on their exoskeletons to allow air to enter the trachea. In insects, the tracheal tubes primarily deliver oxygen directly into the insects' tissues. ... The spiracles are located laterally along the thorax and abdomen of most insects—usually one pair of spiracles per body segment.

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