Question

a cockroach breathe through these

Answer 1

They do this by using a very efficient breathing system that uses air filled tubes, called the trachea, to deliver oxygen directly to cells. Oxygen flows in as required into the tracheal system through valves on the insect, called spiracles.

Answer 2

Answer:

Tracheae

Explanation:

cockroaches breathe through a system of tubes called tracheae which are attached to openings called spiracles on all body segments. When the carbon dioxide level in the insect rises high enough, valves on the spiracles open and carbon dioxide diffuses out and oxygen diffuses in.

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