Storage roots found in clusters at base of stem are

Options

A. Nodulose roots
B. Annulated roots
C. Tubeous roots
D. Fasciculated roots

Answer

To solve the question about which type of storage roots are found in clusters at the base of the stem, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the type of storage roots that are found in clusters at the base of the stem.

2. **Evaluate Option 1: Nodulus Roots**:
- Nodulus roots are associated with legume plants and are involved in the fixation of atmospheric nitrogen. They form a symbiotic relationship with nitrogen-fixing bacteria.
- **Conclusion**: This option is incorrect as nodulus roots do not serve as storage roots at the base of the stem.

3. **Evaluate Option 2: Annulated Roots**:
- Annulated roots are characterized by disk-like structures. They do not typically serve as storage roots.
- **Conclusion**: This option is also incorrect as annulated roots do not fit the description of storage roots found in clusters.

4. **Evaluate Option 3: Tubus Roots**:
- Tubus roots are found in tubers, which are swollen storage organs. However, they are not specifically clustered at the base of the stem.
- **Conclusion**: This option is incorrect as tubus roots do not match the criteria given in the question.

5. **Evaluate Option 4: Fasciculated Roots**:
- Fasciculated roots are indeed storage roots that are found in clusters at the base of the stem. They serve the purpose of storing nutrients and water.
- **Conclusion**: This option is correct as fasciculated roots are the type of storage roots described in the question.

### Final Answer:
The correct answer is **Option 4: Fasciculated Roots**.