Pesticide used in perpartion of herbarium is

Options

A. 2, 4-D
B. NAA
C. Mercuric chloride
D. Carbon disuphide

Answer

**Step-by-Step Solution:**

1. **Understanding Herbarium**: A herbarium is a collection of dried plants that are preserved on herbarium sheets. These sheets contain information related to the plants.

2. **Preparation of Herbarium**: During the preparation of a herbarium, the dried plants are susceptible to damage from various pests, including insects and fungi. This is because the dried plants can attract these organisms.

3. **Need for Pesticides**: To prevent damage to the specimens during the herbarium preparation, it is essential to use a pesticide. The pesticide should effectively control pests without harming the plant specimens.

4. **Identifying the Correct Pesticide**: Among the options provided:
- **2,4-D**: This is a synthetic auxin and acts as a plant growth regulator, so it is not suitable for pest control.
- **NAA (Naphthalene Acetic Acid)**: This is also a synthetic auxin and serves as a plant growth regulator, making it an incorrect choice.
- **Mercury Chloride**: This is used as a pesticide and can effectively control pests without harming the dried plant specimens. This is the correct answer.
- **Carbon Disulphide**: This can be harmful to plants and is not suitable for use in herbarium preparation.

5. **Conclusion**: The correct pesticide used in the preparation of herbarium is **Mercury Chloride**.

**Final Answer**: Mercury Chloride (Option C)

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