Which one of the following is one of the paths followed by `air//O_(2)` during respiraton in an adult male Periplaneta americana as it enters the animal body.A. Spiracle in metathorax, trachea, tracheoles, oxygen diffuses into cellsB. Mouth, bronchial tuibe, trachea, oxygen enters cellsC. Spiracles in prothorax, tracheoles, trachea, oxygen diffuses into cells.D. Hypopharynx, mouth, pharyns, trachea, tissues.

Which one of the following is one of the paths followed by `air//O_(2)

1.	Which one of the following is one of the paths followed by `air//O_(2)` during respiraton in an adult male Periplaneta americana as it enters the animal body.A. Spiracle in metathorax, trachea, tracheoles, oxygen diffuses into cellsB. Mouth, bronchial tuibe, trachea, oxygen enters cellsC. Spiracles in prothorax, tracheoles, trachea, oxygen diffuses into cells.D. Hypopharynx, mouth, pharyns, trachea, tissues.
Answer» Correct Answer - A Animals belonging to the order rodentia have each jaw with one pair of long rootless chisel like incisors growing throughout life.