In which of the following plants roots bud is involved in vegetative propagation ?

Options

A. Sugarcane
B. Banana
C. Ginger
D. Dahlia

Answer

To solve the question "In which of the following plants roots bud is involved in vegetative propagation?", we will analyze each option provided and determine which plant utilizes root buds for vegetative propagation.

### Step-by-Step Solution:

1. **Understanding Vegetative Propagation**:
- Vegetative propagation is a form of asexual reproduction where new plants grow from parts of the parent plant, such as roots, stems, or leaves.

2. **Analyzing the Options**:
- **Option 1: Sugarcane**:
- Sugarcane propagates through stem cuttings (nodes), not roots.

- **Option 2: Banana**:
- Bananas propagate through rhizomes (modified stems), not roots.

- **Option 3: Ginger**:
- Ginger also propagates through rhizomes, which are stem structures, not roots.

- **Option 4: Dahlia**:
- Dahlia can propagate through adventitious roots, which can form new plants. This means that the roots can develop buds that grow into new plants.

3. **Conclusion**:
- The plant in which root buds are involved in vegetative propagation is **Dahlia** (Option 4).

### Final Answer:
The correct answer is **Dahlia**.