Cockroach

In cockroaches: - There are 10 pairs of spiracles (small openings) on the body surface, allowing for gas exchange. - The arrangement is termed holopneustic, where all spiracles are functional — a feature of cockroach respiration. Thus, both statements are correct.

In cockroach: - While the brain controls vision and antennae movements, the sub-oesophageal ganglion acts as the principal motor centre. - It controls the movements of mouthparts, head, and other associated actions. Therefore, the correct answer is option (3).