Assertion Primary cell wall is permeable whereas secondary cell wall is impermeable
Reason Primary cell wall is made up of cellulose whereas secondary cell wall is made up of lignin

Options

A. If both Assertion and Reason are true and the Reason is a correct expanation of the Assertion
B. If both Assertion and Reason re true but Reason is not a correct eplanatin of the Assertion
C. If Assertion is true but the Reason is false
D. If both Assertion and Reason are false

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that the primary cell wall is permeable while the secondary cell wall is impermeable.
- This is true because the primary cell wall allows the passage of water and other substances, which is essential for the plant's metabolic processes.

2. **Understanding the Reason**:
- The reason given is that the primary cell wall is made up of cellulose, while the secondary cell wall is made up of lignin.
- Cellulose is a polysaccharide that forms a flexible and permeable structure, allowing for the movement of substances.
- In contrast, lignin is a complex organic polymer that provides rigidity and impermeability to the secondary cell wall.

3. **Connecting Assertion and Reason**:
- The permeability of the primary cell wall can be attributed to its composition of cellulose.
- The impermeability of the secondary cell wall is due to the presence of lignin and suberin, which make it less permeable.

4. **Conclusion**:
- Both the assertion and the reason are correct, and the reason accurately explains the assertion. Therefore, the statement is true.

### Final Answer:
- **Assertion**: True
- **Reason**: True
- **Conclusion**: The reason supports the assertion.

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