Main root of tap root system represents

Options

A. Plumule axis of the seed
B. Embryo axis of the seed
C. Radicle axis of the seed
D. Hypocotyl part of the seed

Answer

To solve the question regarding what the main root of a taproot system represents, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Taproot System**:
- The taproot system is characterized by a single main root (the primary root) that grows deeper into the soil, with smaller lateral roots branching off from it.

2. **Identifying the Main Root**:
- The main root in a taproot system is the primary root that develops from the seed during germination.

3. **Examining the Options**:
- The options provided are:
1. Plumule
2. Embryo
3. Radicle
4. Hypocotyl

4. **Analyzing Each Option**:
- **Plumule**: This is the part of the seed that develops into the shoot system, not the root.
- **Embryo**: This term refers to the entire young plant that develops from the fertilized ovule, not specifically the root.
- **Radicle**: This is the part of the embryo that develops into the primary root of the plant. It is specifically responsible for forming the taproot in a taproot system.
- **Hypocotyl**: This is the part of the seedling that connects the radicle to the cotyledons (seed leaves), but it is not the main root.

5. **Conclusion**:
- The main root of the taproot system represents the **Radicle**. Therefore, the correct answer is option 3: Radicle.

### Final Answer:
The main root of the taproot system represents the **Radicle**.

---