Assertion : Permanent tissue is composed of mature cells.
Reason : Meristematic tissue is a group of actively dividing cells.

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 solve the question, we need to analyze both the assertion and the reason provided.

### Step 1: Understand the Assertion
The assertion states that "Permanent tissue is composed of mature cells."
- **Explanation**: Permanent tissues are indeed made up of cells that have matured and differentiated to perform specific functions. These cells are no longer dividing and have taken on specialized roles in the plant.

### Step 2: Understand the Reason
The reason states that "Meristematic tissue is a group of actively dividing cells."
- **Explanation**: This statement is also true. Meristematic tissue consists of undifferentiated cells that are actively dividing. These cells are responsible for the growth of the plant and can differentiate into various types of permanent tissues.

### Step 3: Determine the Relationship
Now we need to determine if the reason correctly explains the assertion.
- The assertion is about permanent tissue being composed of mature cells, while the reason discusses meristematic tissue, which is composed of actively dividing cells and is undifferentiated.
- Therefore, while both statements are true, the reason does not explain the assertion.

### Conclusion
Since both the assertion and the reason are true, but the reason does not serve as a correct explanation for the assertion, the correct answer is:
**Option B: Both assertion and reason are true but reason is not correct explanation of assertion.**

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