Organelle having flattened membrane bound cisternae and lying near the nucleus is

Options

A. Golgi apparatus
B. mitochondrion
C. centriole
D. nucleolus

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for an organelle that has flattened membrane-bound cisternae and is located near the nucleus.

2. **Identifying Key Features**: The key features mentioned are:
- Flattened membrane-bound cisternae
- Proximity to the nucleus

3. **Analyzing Options**: The options provided are:
- Golgi apparatus
- Mitochondria
- Centriole
- Nucleolus

4. **Evaluating Each Option**:
- **Golgi Apparatus**: This organelle consists of flattened membrane-bound sacs called cisternae and is typically located near the nucleus. It plays a crucial role in modifying, sorting, and packaging proteins and lipids.
- **Mitochondria**: These are not flattened sacs but rather have a double membrane structure and are involved in energy production.
- **Centriole**: This is a cylindrical structure involved in cell division and does not have the characteristics of flattened cisternae.
- **Nucleolus**: This is a dense region within the nucleus where ribosomal RNA is produced, but it does not have the structure of flattened cisternae.

5. **Conclusion**: Based on the analysis, the organelle that fits the description of having flattened membrane-bound cisternae and lying near the nucleus is the **Golgi apparatus**.

**Final Answer**: Golgi apparatus

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