Periplaneta shows

Options

A. Complete metamorphosis
B. Incomplete metamorphosis
C. No metamorphosis
D. Gradual metamorphosis.

Answer

**Step-by-Step Solution:**

1. **Understanding Metamorphosis**: Metamorphosis is a biological process where an organism undergoes significant physical changes from its larval stage to its adult form. There are different types of metamorphosis: complete, incomplete, and gradual.

2. **Types of Metamorphosis**:
- **Complete Metamorphosis**: Involves four distinct stages - egg, larva, pupa, and adult (e.g., butterflies).
- **Incomplete Metamorphosis**: Involves three stages - egg, nymph, and adult (e.g., grasshoppers).
- **Gradual Metamorphosis**: Often considered synonymous with incomplete metamorphosis, where the organism gradually develops into its adult form without a pupal stage.

3. **Identifying Periplaneta**: Periplaneta is the genus name for cockroaches. It is important to identify the type of metamorphosis exhibited by this organism.

4. **Metamorphosis in Periplaneta**: Cockroaches, including Periplaneta, undergo gradual metamorphosis. This means they develop from an egg to a nymph and then to an adult without a distinct pupal stage.

5. **Conclusion**: Based on the understanding of metamorphosis and the specific characteristics of Periplaneta, the correct answer is that Periplaneta shows gradual metamorphosis.

**Final Answer**: Periplaneta shows gradual metamorphosis.

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