The main functions of the root is

Options

A. absorption of water and minerals
B. to provide proper anchorage of plant
C. to store reserve food material and synthesis of plant growth regulators
D. All of the above

Answer

To determine the main functions of the root, we will analyze each of the provided options step by step.

### Step-by-Step Solution:

1. **Identify the Functions of Roots**:
- Roots serve multiple essential functions in plants. The primary functions include absorption, anchorage, storage, and synthesis of growth regulators.

2. **Evaluate Each Option**:
- **Option 1: Absorption of water and minerals**:
- This is a fundamental function of roots. They absorb water and essential minerals from the soil, which are crucial for plant growth and development.
- **Option 2: Provide proper anchorage of the plant**:
- Roots anchor the plant securely to the soil, providing stability and support against environmental factors like wind and rain.
- **Option 3: Store reserve food material and synthesize plant growth regulators**:
- Roots can store carbohydrates and other nutrients, acting as a reserve for the plant. Additionally, they are involved in the synthesis of plant hormones, such as auxins, which regulate growth.
- **Option 4: All of the above**:
- Since all the previous options are correct and represent key functions of roots, this option encompasses all the functions discussed.

3. **Conclusion**:
- After evaluating all the options, it is clear that the correct answer is **Option 4: All of the above**. This option correctly summarizes the various essential functions performed by roots.

### Final Answer:
The main functions of the root are best summarized by **Option 4: All of the above**.