Which is essential for the growth of root tip ?

Options

A. Zn
B. Fe
C. Ca
D. Mn

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which mineral is essential for the growth of the root tip. The options provided are Zinc, Iron, Calcium, and Manganese.

2. **Defining Root Tip**: The root tip is the growing end of a root, which is crucial for the root's penetration into the soil. It is often protected by a structure known as the root cap.

3. **Function of Root Tip**: The primary function of the root tip is to protect the root as it grows and penetrates the soil. This protection is vital as the root is responsible for absorbing water and minerals from the soil.

4. **Identifying the Role of Minerals**:
- **Calcium**: It is essential for the structural integrity of the root tip. Calcium is a component of calcium pectate, which helps in hardening the cells in the root tip, providing necessary protection.
- **Zinc**: While important for enzyme activation, it does not play a direct role in the structural growth of the root tip.
- **Iron**: It is crucial for maintaining chlorophyll structure but is not directly involved in root tip growth.
- **Manganese**: Important for the process of photosynthesis, specifically in the splitting of water, but not essential for root tip growth.

5. **Conclusion**: Based on the functions of the minerals, Calcium is identified as the essential mineral for the growth of the root tip due to its role in providing structural integrity and protection.

**Final Answer**: The essential mineral for the growth of the root tip is **Calcium** (Option C).

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