what is the use of trachea …
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Amar Kumar 7 years, 9 months ago
Insects have spiracles on their exoskeletons to allow air to enter the trachea. In insects, the tracheal tubes primarily deliver oxygen directly into the insects' tissues.The spiracles can be opened and closed in an efficient manner to reduce water loss.
The trachea ,windpipe, is a cartilaginous tube that connects the pharynx and larynx to the lungs, allowing the passage of air, and so is present in almost all air-breathing animals with lungs.
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