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?
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?
- [NEET 2013]
- A
Spiracle in metathorax, trachea, tracheloes, oxygen diffuses into cells
- B
Mouth, bronchial tube, trachea, oxygen enters cells
- C
Spiracles in prothorax, tracheoles, trachea, oxygen diffuses into cells.
- D
Hypopharynx, mouth, pharynx, trachea, tissues
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