Adventitious roots which develop in clusters from the base of the stem and nodes of the creeping stems, such as grasses, are called :

Options

A. stilt roots
B. epiphytic roots
C. prop roots
D. fibrous roots

Explanation

To solve the question regarding the type of adventitious roots that develop in clusters from the base of the stem and nodes of creeping stems such as grasses, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Adventitious Roots**:
- Adventitious roots are roots that develop from parts of the plant other than the root system. They can arise from stems, leaves, or other non-root structures.

2. **Identifying the Context**:
- The question specifies that these roots develop in clusters from the base of the stem and nodes of creeping stems, which is characteristic of certain types of plants, particularly grasses.

3. **Analyzing the Options**:
- The options provided are:
- a) Stilt roots
- b) Apophytic roots
- c) Prop roots
- d) Fibrous roots

4. **Evaluating Each Option**:
- **Stilt Roots**: These are aerial roots that provide support and are found in plants like red mangrove. They do not fit the description of developing in clusters from the base of the stem.
- **Apophytic Roots**: These roots grow on the surface of the plant and absorb moisture from the environment. They are typically found in ferns and orchids, not grasses.
- **Prop Roots**: These roots provide support and arise from the branches of the plant. They are not specifically clustered at the base of the stem.
- **Fibrous Roots**: These roots develop in clusters from the base of the stem and nodes of creeping stems, characteristic of grasses.

5. **Conclusion**:
- Based on the analysis, the correct answer is **fibrous roots**, as they are the adventitious roots that develop in clusters from the base of the stem and nodes of creeping stems like those found in grasses.

### Final Answer:
The adventitious roots which develop in clusters from the base of the stem and nodes of the creeping stems, such as grasses, are called **fibrous roots**.