Question

Air holes in insects​

Answer 1

Instead of lungs, insects breathe with a network of tiny tubes called tracheae. Air enters the tubes through a row of holes along an insect's abdomen. The air then diffuses down the blind-ended tracheae. Since the biggest bugs have the longest tracheae, they should need the most oxygen to be able to breathe.

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Answer 2

Like humans, breathing in an insect is associated with the respiratory system, there are substantial differences however, insects do not have lungs, there “blood” (hemolymph) does not carry oxygen. There respiratory system is entirely seperate from their circulatory system.