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Which one of the following is one of the...

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 cells

B

Mouth, bronchial tuibe, trachea, oxygen enters cells

C

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

D

Hypopharynx, mouth, pharyns, trachea, tissues.

Text Solution

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The correct Answer is:
A

Animals belonging to the order rodentia have each jaw with one pair of long rootless chisel like incisors growing throughout life.
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