Assertion :- DNA is chemically and structurally more stable.
Reason : DNA have no catalytic properties.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is Flase.
D. If both Assertion & Reason are false.

Answer

To analyze the assertion and reason provided in the question, let's break down the information step by step.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "DNA is chemically and structurally more stable." This is true because DNA has a double-helix structure and is less prone to hydrolysis compared to RNA. The presence of thymine instead of uracil also contributes to its stability.

2. **Understanding the Reason**:
- The reason states that "DNA has no catalytic properties." This is also true. DNA primarily serves as a genetic material and does not function as a catalyst, unlike some RNA molecules (ribozymes) that can catalyze reactions.

3. **Evaluating the Relationship**:
- Now, we need to determine if the reason provided is a correct explanation of the assertion. While both statements are true, the lack of catalytic properties of DNA does not directly explain why DNA is more stable. Stability arises from its structural features and chemical composition, not from its lack of catalytic ability.

4. **Conclusion**:
- Therefore, both the assertion and the reason are true, but the reason does not correctly explain the assertion.

5. **Final Answer**:
- The correct option is that both the assertion and reason are true, but the reason is not the correct explanation of the assertion.