Question

Spiracles of Cockroach which are larger and always kept open are [RPMT 1998]
A) First and second pairs
B) First and third pairs
C) First and tenth pairs
D) Second and third pairs

Answer 1

Spiracles of Cockroach which are larger and always kept open are
➡️ First and third pairs

Answer 2

Answer:

Spiracles of Cockroach which are larger and always kept open are

(B) First and third pairs

Explanation:

In cockroach the tracheal system open outsides by 10 pairs of spiracles. The first and third pairs spiracles remain open all times.

Therefore, the correct answer is option B.

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@GauravSaxena01