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Question

About how many times does the nymph of Periplaneta americana undergo moulting before becoming an adult


A
2
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B
3
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C
4
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D
13
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E
17
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Solution

The correct option is C 13
The nymphal stage begins when the egg hatches and ends with the emergence of the adult. The number of times a Periplaneta americana moults 13 times. The first instar American cockroach is white immediately after hatching then becomes a greyish brown.
So the correct answer is '13'.

Biology

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