A cymose inflorescence 'X' possess two flowers on cither side of peduncle in the axil of bracts. In cymose inflorescence 'Y' two flower bearing branched peduncles arise in the axil of bracts. 'X' and 'Y' are

Options

A. Cymose and dichasial cyme
B. Monochasial and dichasial cyme
C. Solitary cyme and dichasial cyme
D. Solitary cyme and cymose

Answer

To solve the question regarding the cymose inflorescence 'X' and 'Y', we need to analyze the descriptions provided for each inflorescence type.

### Step-by-Step Solution:

1. **Understanding Cymose Inflorescence**:
- Cymose inflorescence is characterized by a determinate growth pattern where the main axis ends in a flower, and further flowers develop laterally from it.

2. **Analyzing Inflorescence 'X'**:
- Inflorescence 'X' has two flowers on either side of the peduncle in the axil of bracts. This indicates that the flowers are arranged in a way that they are directly attached to the main axis, with two flowers appearing on both sides.
- This arrangement is typical of a **cymose inflorescence**.

3. **Analyzing Inflorescence 'Y'**:
- Inflorescence 'Y' has two flower-bearing branched peduncles arising in the axil of bracts. This suggests that the flowers are not just on the main axis but are also branching out from it, indicating a more complex structure.
- This arrangement is characteristic of a **dichasial cyme**, where two branches arise from the main axis, each bearing a flower.

4. **Identifying 'X' and 'Y'**:
- Based on the analysis:
- Inflorescence 'X' is identified as a **simple cymose inflorescence**.
- Inflorescence 'Y' is identified as a **dichasial cyme**.

5. **Conclusion**:
- Therefore, 'X' is a cymose inflorescence and 'Y' is a dichasial cyme.

### Final Answer:
- 'X' is a cymose inflorescence and 'Y' is a dichasial cyme.