Organelle rich in Manganese is

Options

A. Ribosome
B. Mitochondria
C. Chloroplast
D. Nucleus

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the organelle that is rich in manganese. Manganese is an essential trace element that plays a role in various biological processes.

2. **Reviewing the Options**: The options provided are:
- A) Ribosome
- B) Mitochondria
- C) Chloroplast
- D) Nucleus

3. **Analyzing Each Option**:
- **Ribosome**: Primarily involved in protein synthesis and does not have a significant association with manganese.
- **Mitochondria**: Known as the powerhouse of the cell, involved in energy production (ATP) and redox reactions. Manganese is important for these processes.
- **Chloroplast**: Involved in photosynthesis and contains chlorophyll, but not specifically known for manganese accumulation.
- **Nucleus**: Contains genetic material and is involved in cell regulation but does not have a notable association with manganese.

4. **Identifying the Correct Answer**: Based on the analysis, mitochondria are known to be rich in manganese due to their role in redox reactions and energy production. Manganese ions (Mn²⁺) accumulate in mitochondria, particularly in nerve cells, aiding in these processes.

5. **Conclusion**: The organelle that is rich in manganese is **Mitochondria**.