Apical meristem of root is present
(a) Only in radicles
(b) Only in tap roots
(c) Only in adventitious roots
(d) In all the roots

Options

A. Only in radicles
B. Only in tap roots
C. Only in adventitious roots
D. In all the roots

Answer

To solve the question regarding the presence of apical meristem in roots, let's analyze the options step by step:

1. **Understanding Apical Meristem**:
- The apical meristem is a type of primary meristem found at the tips of roots and shoots. It is responsible for the growth in length of the plant.

2. **Identifying Root Types**:
- Roots can be classified into different types, primarily tap roots and adventitious roots.
- **Tap Roots**: These are the main roots that grow vertically downward and can have smaller lateral roots.
- **Adventitious Roots**: These roots arise from non-root tissues, such as stems or leaves, and can grow in various directions.

3. **Analyzing the Options**:
- **Option (a)**: Only in radicles - This is incorrect because apical meristem is not limited to radicles (the first root that emerges from a seed).
- **Option (b)**: Only in tap roots - This is also incorrect as apical meristem is not exclusive to tap roots.
- **Option (c)**: Only in adventitious roots - This is incorrect as well since apical meristem is found in both types of roots.
- **Option (d)**: In all the roots - This is the correct option. Apical meristem is present in both tap roots and adventitious roots.

4. **Conclusion**:
- Based on the analysis, we can conclude that the apical meristem is present in all types of roots, making option (d) the correct answer.

### Final Answer:
**(d) In all the roots**