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

Spiracles in prothorax, tracheoles, trachea, oxygen diffuses into cells

Hypopharynx, mouth, pharynx, trachea, tissues

Mouth, bronchial tube, trachea, oxygen enters cells

Spiracle in metathorax, trachea, tracheoles, oxygen diffuses into cells

Which one of the following is one of the paths followed by air/O2 duri

1.	Which one of the following is one of the paths followed by air/O2 during respiration in an adult male Periplaneta americana as it enters the animal body?
A.	Hypopharynx, mouth, pharynx, trachea, tissues
B.	Mouth, bronchial tube, trachea, oxygen enters cells
C.	Spiracle in metathorax, trachea, tracheoles, oxygen diffuses into cells
D.	Spiracles in prothorax, tracheoles, trachea, oxygen diffuses into cells
Answer» D. Spiracles in prothorax, tracheoles, trachea, oxygen diffuses into cells