Assertion: Uric acid is produced by the metabolism of purine and pyrimidine.
Reason: Uric acid has high toxicity and is soluble in water.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertin, then mark (1)
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertin, then mark (2)
C. If Assertion is true statement but Reason is false, then mark (3)
D. If both Assertin and Reason are false statements, then mark (4)

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Assertion:**
- The assertion states that "Uric acid is produced by the metabolism of purine and pyrimidine."
- This statement is true. Uric acid is indeed a product of the breakdown of purines (like adenine and guanine) and pyrimidines (like cytosine, thymine, and uracil).

2. **Understanding the Reason:**
- The reason states that "Uric acid has high toxicity and is soluble in water."
- This statement is false. Uric acid is actually less toxic compared to other nitrogenous wastes like ammonia and urea, and it is insoluble in water. This characteristic allows birds to excrete it with minimal water loss, which is crucial for their survival.

3. **Conclusion:**
- Since the assertion is true and the reason is false, we can conclude that the correct option is that the assertion is true but the reason is false.

**Final Answer:**
- The assertion is true, but the reason is false.

---