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

A. Development of anal cerci.

B. Development of both forewings and hind wings.

C. Development labium.

D. Mandibles become harder.

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Correct Answer : B.


The development of cockroach is paurometabolous meaning that their development is through nymphal stage. The nymphs look very much like adults. The nymph grows by moulting about 13 times to reach adult form. The last nymphal stage has wingpads while adult cockroaches have wings.

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