In the following table ' X " is formed by the division or branching of 'Y ' which one is an exception ?
`{:(,'X','Y'),(A,"Arteriole","Artery"),(B,"Capillary","Arteriole"),(C,"Venule","Vein"),(D,"Renal Artery","Aorta"):}`

Options

A. A
B. B
C. C
D. D

Answer

To determine which option is an exception in the relationship between 'X' and 'Y', we need to analyze each pair provided in the table.

1. **Understanding the Relationships**:
- **Arteriole and Artery (Option A)**: An artery branches into arterioles. This is a standard branching relationship.
- **Capillary and Arteriole (Option B)**: Arterioles branch into capillaries. Again, this follows the expected branching pattern.
- **Venule and Vein (Option C)**: Venules are formed from the convergence of capillaries and then merge to form veins. This is also a typical branching relationship.
- **Renal Artery and Aorta (Option D)**: The aorta branches into various arteries, including the renal artery. However, the renal artery does not branch into the aorta; it is a direct branch from the aorta.

2. **Identifying the Exception**:
- In options A, B, and C, 'X' is formed by the division or branching of 'Y' as expected.
- In option D, the renal artery does not branch from the aorta; rather, it is a branch of the aorta. Therefore, it does not fit the pattern of 'X' being formed by the division or branching of 'Y'.

3. **Conclusion**:
- The exception is **Option D: Renal Artery and Aorta**.

### Final Answer:
The exception is **Option D: Renal Artery and Aorta**.