Root system grows from

Options

A. Embryo of seed
B. Radicle of embryo
C. Plumule of embryo
D. Coleoptile.

Answer

To answer the question "Root system grows from," we will analyze the options provided and determine the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding the Seed Structure**:
- A seed consists of several parts, including the embryo, which is crucial for the development of the plant. The embryo contains the radical and the plumule.

**Hint**: Recall the basic structure of a seed and its components.

2. **Identifying the Embryo Parts**:
- The embryo has two main parts: the radical and the plumule. The radical is the part that will develop into the root system, while the plumule will develop into the shoot system.

**Hint**: Focus on the functions of the radical and plumule in plant development.

3. **Evaluating the Options**:
- **Option 1: Embryo of the seed**: While the embryo contains the parts that will develop into roots and shoots, it is not the direct source of the root system.
- **Option 2: Radical of the embryo**: This is the correct answer, as the radical grows downwards to form the root system.
- **Option 3: Plumule of the embryo**: This part develops into the shoot, not the root, making it incorrect.
- **Option 4: Coleoptile**: This is a protective sheath for the young shoot tip and does not contribute to root development.

**Hint**: Compare each option with the function of the radical and plumule.

4. **Conclusion**:
- The root system grows from the radical of the embryo because it is specifically designed to grow downwards into the soil to absorb water and nutrients.

**Hint**: Remember that roots are primarily responsible for anchoring the plant and nutrient absorption.

### Final Answer:
The root system grows from the **radical of the embryo**.