Assertion : Nutrients are required by plants for the synthesis of protoplasm and act as source of energy.
Reason : Water provides the medium for enzymatic activities needed for growth.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false

Explanation

To analyze the assertion and reason provided in the question, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Nutrients are required by plants for the synthesis of protoplasm and act as a source of energy."
- This is true because plants need various nutrients (like nitrogen, phosphorus, potassium, etc.) to create protoplasm, which is essential for cell structure and function. Additionally, these nutrients can also serve as energy sources.

2. **Understanding the Reason**:
- The reason states that "Water provides the medium for enzymatic activities needed for growth."
- This statement is also true. Water is crucial for biochemical reactions in plants, including enzymatic activities that facilitate growth and development.

3. **Evaluating the Relationship**:
- We need to determine whether the reason provided explains the assertion.
- While both statements are true, the reason does not directly explain why nutrients are needed for the synthesis of protoplasm or as a source of energy. Instead, it explains the role of water in enzymatic activities.

4. **Conclusion**:
- Since both the assertion and the reason are true, but the reason does not serve as an explanation for the assertion, we can conclude that the correct relationship is that both statements are true, but the reason is not the correct explanation for the assertion.

### Final Answer:
- Both the assertion and reason are true, but the reason is not the correct explanation for the assertion.