Question

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

• A. 2
• B. 3
• C. 4
• D. 13
• E. 17

Answer 1

Answer: (D)

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'.