Lepisma is

Options

A. Stick Insect
B. Leaf Insect
C. Praying Mantis
D. Silver Fish.

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about "Lepisma". We need to determine what type of organism it is.

2. **Review the Options**: The options provided are:
- Option 1: Stick insect
- Option 2: Leaf insect
- Option 3: Praying mantis
- Option 4: Silver fish

3. **Research the Characteristics of Lepisma**: Lepisma is a small, primitive, wingless insect. It is known for its silvery appearance and fish-like shape.

4. **Scientific Classification**: Lepisma belongs to the order Zygentoma and the family Lepismatidae. Its scientific name is Lepisma saccharinum.

5. **Common Name Explanation**: The common name "silverfish" comes from its silvery light grey color and its fish-like appearance.

6. **Eliminate Incorrect Options**:
- Stick insect: Resembles a stick, not related to Lepisma.
- Leaf insect: Resembles a leaf, also not related.
- Praying mantis: Belongs to a different order (Mantodea) and has distinct features.

7. **Conclusion**: Based on the characteristics and classification, the correct answer is that Lepisma is a silverfish.

**Final Answer**: Lepisma is a silverfish (Option 4).

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