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Spiracles of Cockroach which are larger ...

Spiracles of Cockroach which are larger and always kept open are

A

First and second pairs

B

First and third pairs

C

First and tenth pairs

D

Second and third pairs

Text Solution

Verified by Experts

The correct Answer is:
B
In cockroach the tracheal system open’s outside by ten pairs of spiracles. The first and third pair’s spiracles remain open all the times
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