Apical meristem of root is present

Options

A. Only in main root
B. Only in tap roots
C. Only in adventitious roots
D. In all roots

Answer

### Step-by-Step Solution:

1. **Understanding Apical Meristem**:
- The apical meristem is a type of meristematic tissue found at the tips of roots and shoots in plants. It consists of undifferentiated cells that are capable of division and contribute to the growth of the plant.

2. **Location of Apical Meristem**:
- The apical meristem in roots is specifically located at the root tip. This region is responsible for the growth of the root in length.

3. **Types of Roots**:
- Roots can be categorized into different types: main roots (like tap roots), lateral roots, and adventitious roots.

4. **Function of Root Apical Meristem**:
- The root apical meristem (RAM) is crucial for root development. It produces new cells that will differentiate into various root tissues, allowing the plant to grow deeper into the soil.

5. **Presence in Different Root Types**:
- The apical meristem is not limited to just one type of root. It is present in all types of roots, including the main root (tap root), lateral roots, and adventitious roots.

6. **Conclusion**:
- Based on the understanding that the apical meristem is essential for root growth and is found in all root types, the correct answer to the question is that the apical meristem of the root is present in all roots.

### Final Answer:
The apical meristem of the root is present in **all roots**.

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