In which pair both the plants can be vegetatively propagated by leaf pieces?

Options

A. Bryophyllum and Kalanchoe
B. Chrysanthemum and Agave
C. Agave and Kalanchoe
D. Asparagus and Bryopyllum

Answer

To determine which pair of plants can be vegetatively propagated by leaf pieces, we need to analyze each option based on their methods of asexual reproduction.

### 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. This can occur through various plant parts such as roots, stems, and leaves.

2. **Analyzing the Options**:
- **Option 1: Bryophyllum and Kalanchoe**:
- **Bryophyllum**: Known for its ability to propagate from leaf pieces. It produces plantlets along the edges of its leaves.
- **Kalanchoe**: Also propagates through leaf cuttings, where new plants can grow from the leaf segments.
- **Conclusion**: Both plants can be vegetatively propagated by leaf pieces.

- **Option 2: Chrysanthemum and Agave**:
- **Chrysanthemum**: Typically propagated through root suckers or cuttings, not leaves.
- **Agave**: Propagates through bulbils, which are small bulbs formed on the flower stalks.
- **Conclusion**: Neither plant can be propagated by leaf pieces.

- **Option 3: Agave and Kalanchoe**:
- **Agave**: As mentioned, propagates through bulbils.
- **Kalanchoe**: Can propagate by leaf pieces.
- **Conclusion**: Only Kalanchoe can be propagated by leaves.

- **Option 4: Asparagus**:
- **Asparagus**: Primarily propagated through root division.
- **Conclusion**: Does not propagate by leaves.

3. **Final Conclusion**:
- The only pair where both plants can be vegetatively propagated by leaf pieces is **Option 1: Bryophyllum and Kalanchoe**.

### Final Answer:
**Option 1: Bryophyllum and Kalanchoe**