What external changes are visible after the last moult of a cockroach nymph?

A Labium develops

B Mandibles become harder

C Anal cerci develop

D Both fore wings with hind wings develop

The answer is D.

Solution

Wing pads are present in the nymph, but only the adult cockroach, after the last moult, has fully developed fore wings and hind wings.

Concept Metamorphosis of cockroach

4 questions from this chapter have appeared across 4 exam years.