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What external changes are visible after ...

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

A

Mandibles become harder

B

Anal cerci develop

C

Both fore wings and hind wings develop

D

Labium develops

Text Solution

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The correct Answer is:
c
In cockrcach, development is pamo metabolous The nymph grows by moulting about 13 times to reach the adult form. The next to last nymphal stage has wing pads but only adult cockroaches. have wings
And cerci are a pair of jointed filamentous structures in `10^(th)` segment labium is a lower lip and a pair of mandibles present in mouthparts of cockroach.
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