A) Paried nature
B) Noncollapsible walls
C) Ciliated inner lining
D) Origin from head
Correct Answer: B
Solution :
In cockroach, the trachea is lived with spiral thickning of cuticle called intima which prevents the tracheal tubes from collapsing (Trachea of rabbits is also non collapsible).You need to login to perform this action.
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