In which of the following plant, layering cannot be done?

Options

A. Jasmine
B. Bryophyllum
C. Grapes
D. Litchi

Answer

To determine which plant cannot undergo layering, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding Layering**: Layering is a method of vegetative propagation where a stem is encouraged to root while still attached to the parent plant. This method is commonly used for many types of plants.

2. **Analyzing the Options**:
- **Option A: Jasmine**: Jasmine can be propagated through layering. The stems can be bent to the ground and covered with soil to encourage rooting.
- **Option B: Bryophyllum**: Bryophyllum is known for its unique method of vegetative propagation through its leaves. When leaves fall and come into contact with the soil, they can produce new plants. However, it does not typically undergo layering since it relies on leaf propagation.
- **Option C: Grapes**: Grapes can also be propagated through layering. The stems can be bent down to the ground and covered to promote root growth.
- **Option D: Lychee**: Lychee can be propagated through layering as well. The branches can be layered to produce new plants.

3. **Conclusion**: After analyzing all the options, it is clear that Bryophyllum is the plant that cannot undergo layering. Instead, it propagates through its leaves.

### Final Answer:
The plant in which layering cannot be done is **Bryophyllum**.