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,"vena cava","Aorta"):}`

Options

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

Answer

To solve the question, we need to analyze the relationships between the pairs of terms provided in the table. The question asks us to identify which option does not fit the pattern where 'X' is formed by the division or branching of 'Y'.

1. **Understanding the Relationships**:
- **Option A**: Artery (Y) branches to form Arteriole (X).
- **Option B**: Arteriole (Y) branches to form Capillary (X).
- **Option C**: Vein (Y) branches to form Venule (X).
- **Option D**: Aorta (Y) does not branch into Vena Cava (X).

2. **Analyzing Each Option**:
- In options A, B, and C, we see that the first term (Y) is indeed branching or dividing to form the second term (X).
- In option D, the Aorta is the largest artery and does not branch into the Vena Cava. Instead, the Aorta branches into other arteries that supply blood to different parts of the body, while the Vena Cava is a large vein that returns blood to the heart.

3. **Conclusion**:
- Therefore, the exception to the rule where 'X' is formed by the division or branching of 'Y' is option D: "vena cava" is not formed by the division of "aorta".

**Final Answer**: The correct answer is option D: "vena cava" does not form from the "aorta".

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