At the time of fission, meganucleus of Paramecium undergoes

Options

A. Dispersion
B. Mitosis
C. Amitosis
D. Budding

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks what happens to the meganucleus of Paramecium during the process of fission. Fission is a form of asexual reproduction in unicellular organisms.

2. **Identifying the Options**: The options provided are:
- 1) Dispersion
- 2) Mitosis
- 3) Ermitosis
- 4) Budding

3. **Analyzing Each Option**:
- **Dispersion**: This term generally refers to the scattering of particles or organisms, which is not relevant to the division of the nucleus in Paramecium.
- **Mitosis**: This is a type of cell division that involves spindle formation and is typical in multicellular organisms. Paramecium, being a unicellular organism, does not undergo typical mitosis.
- **Ermitosis**: Also known as amitosis or binary fission, this is a simpler form of cell division that occurs in some unicellular organisms, including Paramecium. It does not involve spindle formation.
- **Budding**: This is a form of asexual reproduction where a new organism grows from a part of the parent organism. This process does not occur in Paramecium.

4. **Conclusion**: Since Paramecium undergoes a simpler form of cell division known as ermitosis (or amitosis), where the meganucleus divides without spindle formation, the correct answer is **3) Ermitosis**.

### Final Answer:
The meganucleus of Paramecium undergoes **ermitosis** during fission.

---