`Mg^(+)` ions play an important role in

Options

A. Association of ribosomal sub units
B. formation of middle lamella
C. both 1 & 2
D. production golgi complex

Answer

### Step-by-Step Solution:

1. **Understanding the Role of Magnesium Ions**:
- Magnesium ions (Mg²⁺) are essential micronutrients for plants and play significant roles in various biological processes.

2. **Association of Ribosomal Subunits**:
- One of the primary functions of magnesium ions is to aid in the association of ribosomal subunits. Ribosomes are composed of two subunits (large and small), and magnesium helps stabilize these structures, allowing them to function properly in protein synthesis.

3. **Enzyme Activation**:
- Magnesium acts as an activator for several enzymes. These enzymes are crucial for processes such as respiration and photosynthesis, which are vital for plant growth and energy production.

4. **Synthesis of Nucleic Acids**:
- Magnesium ions are also involved in the synthesis of RNA and DNA. This is important for cell division and growth, as nucleic acids are the building blocks of genetic material.

5. **Chlorophyll Structure**:
- Additionally, magnesium is a key component of chlorophyll, the pigment responsible for photosynthesis. It is located at the center of the chlorophyll molecule and is essential for capturing light energy.

6. **Conclusion**:
- Based on the roles discussed, the correct answer to the question is that magnesium ions play an important role in the association of ribosomal subunits.