What are external changes visible after the last molt of a cockroach nymph?
A
Mandibles become harder
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B
Anal cerci develop
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C
Both fore wings and hind wings develop
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D
Labium develops
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Solution
The correct option is C Both fore wings 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 wing pads but only adult cockroaches have wings.