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How does air enter into animal body duri...

How does air enter into animal body during respiration in Periplaneta Americana ?

A

`O_(2)` spreads by diffusion from spiracle of lower thoracic region trachea, tracheal tubes cells.

B

`O_(2)` enters in mouth, tracheal tubes and cells of trachea.

C

Oxygen is released in spiracle of lower thoracic region, tracheal tubes and cells of tracheal tubes.

D

In sub pharyngeal mouth, pharynx, tracheal tubes, tissues.

Text Solution

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The correct Answer is:
A
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