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Q.

In cockroach, which of the following structures develop after the last moult?

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a

Tegmina

b

Legs

c

Sclerites

d

Antennae

answer is A.

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Detailed Solution

The nymphs look very much like adults. 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(tegmina).

Antennae, legs and sclerites are present in the nymph.

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In cockroach, which of the following structures develop after the last moult?