Root formed from prolongation of radicle is -

Options

A. Primary root
B. Secondary root
C. Tertiary root
D. Seminal root

Answer

To solve the question "Root formed from prolongation of radicle is -", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Terms**:
- The term "radicle" refers to the embryonic root of a seedling. It is the first part of the seedling to emerge during germination.

2. **Identifying the Type of Root**:
- When the radicle elongates, it develops into a root. This root is essential for anchoring the plant and absorbing water and nutrients from the soil.

3. **Determining the Type of Plant**:
- In dicotyledonous plants (dicots), the first root that emerges from the radicle is known as the primary root. This primary root can further develop lateral roots.

4. **Conclusion**:
- Therefore, the root formed from the prolongation of the radicle is called the **primary root**.

5. **Final Answer**:
- The correct option is **option 1: primary root**.