The nucleus of a cell was discovered by

Options

A. Schleiden
B. Schwann
C. Robert Brown
D. Camillo Golgi

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks who discovered the nucleus of a cell from the given options: Skiddin, Swann, Robert Brown, and Cameleo Golgi.

2. **Identifying Key Information**: The nucleus is a crucial part of the cell that contains genetic material.

3. **Reviewing Historical Contributions**:
- **Robert Brown**: He is known for his discovery of the nucleus in 1831. This is a significant historical fact in cell biology.
- **Siddon and Swann**: They are known for proposing the cell theory, which is a fundamental concept in biology but not directly related to the discovery of the nucleus.
- **Cameleo Golgi**: He discovered the Golgi apparatus, which is another important cell organelle but not the nucleus.

4. **Selecting the Correct Answer**: Based on the historical contributions, the correct answer is Robert Brown, as he was the one who discovered the nucleus.

5. **Final Answer**: The nucleus of a cell was discovered by **Robert Brown**.

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