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Question

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

A
Both forewings and hind wings develop
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B
Labium develops
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C
Mandibles become harder
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D
Anal cerci develop
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Solution

The correct option is A Both forewings and hind wings develop
Cockroach undergoes paurometabolous development. The nymph moults about 6-7 times to reach the adult form. The next to last nymphal stage has wings pads but only adult cockroaches have wings.

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