Which one of the following is one of the paths followed by air or O ₂ during respiration in the adult male Periplaneta americana as it enters the animal body?Spiracle in metathorax, trachea, tracheoles, oxygen diffuses into cells

Step-by-step solution

The trachea is a dense array of a network of air tubes found in the internal system. Tracheae are known to balance the pressure inside the system. When oxygenrich air enters into the body of the cockroach via spiracles into the tracheal tubes, it diffuses into various tissues and cells of the body. Here, oxygen is used up to liberate energy. Likewise, carbon-dioxide rich air passes into the trachea and moves to the outwards through the spiracles. Carbon dioxide is given out as a result of the respiratory process. (