NEET Biology question

Which one of the following is one of the paths followed by air or O₂ during respiration in the adult male *Periplaneta americana* as it enters the animal body?

(A)Spiracle in metathorax, trachea, tracheoles, oxygen diffuses into cellsCorrect
(B)Mouth, bronchial tube, trachea, oxygen enters cells
(C)Spiracles in prothorax, tracheoles, trachea, oxygen diffuses into cells
(D)Hypopharynx, mouth, pharynx, trachea, tissues

Answer: (A)

Solution

In the cockroach's tracheal respiratory system, air enters through a spiracle (such as one on the metathorax), passes into the trachea, then into the finer

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Question ID VK-106712