How many items moulting occur in Periplanata americana so that nymph grows to reach adult form?

Explanation

To determine how many times moulting occurs in Periplaneta americana (the American cockroach) for a nymph to grow into an adult, we can follow these steps:

1. **Understand the Life Cycle**: The life cycle of a cockroach includes several stages: egg, nymph, and adult. The nymph stage is where the cockroach undergoes growth through moulting.

2. **Identify the Moulting Process**: Moulting is the process where the nymph sheds its exoskeleton to grow. This is a crucial part of the development from nymph to adult.

3. **Count the Moulting Stages**: In the case of Periplaneta americana, it is known that the nymphs undergo a total of 13 moults. Each moult allows the nymph to grow and develop further.

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