Question

Read the given statements and select the correct option.
Statement-A: Respiratory system of cockroach consists of a network of trachea, that open through 20 small holes called spiracles.

Statement-B: Many species of cockroach are of great economic importance.

Answer 1

Many species of cockroaches are wild and are of no known economic importance yet.
In cockroaches, the respiratory system consists of a network of trachea that open outside through small holes that are present on lateral side of the body are called spiracles and are 10 pairs number.