Assertion :- Unit membrane concept of cell wall was given by Robertson .
Reason:- Cell wall is consist of lipoprotein materials.

Options

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

Answer

To analyze the given assertion and reason, let's break down the statements step by step.

### Step 1: Understand the Assertion
- **Assertion:** "Unit membrane concept of cell wall was given by Robertson."
- **Analysis:** The unit membrane concept refers to the idea that biological membranes (like the plasma membrane) consist of a lipid bilayer with proteins embedded in it. This concept was indeed proposed by Hugh Davson and James Danielli, not by Robertson. Therefore, this assertion is **false**.

### Step 2: Understand the Reason
- **Reason:** "Cell wall consists of lipoprotein materials."
- **Analysis:** The cell wall is primarily composed of polysaccharides (like cellulose in plants, chitin in fungi, and peptidoglycan in bacteria) and does not consist of lipoprotein materials. Lipoproteins are more characteristic of cell membranes. Thus, this reason is also **false**.

### Step 3: Evaluate the Relationship Between Assertion and Reason
- Since both the assertion and the reason are false, we can conclude that:
- **Option 1:** Both assertion and reason are true and reason is the correct explanation of assertion. (False)
- **Option 2:** Both assertion and reason are true but reason is not the correct explanation of assertion. (False)
- **Option 3:** Assertion is true but reason is false. (False)
- **Option 4:** Assertion is false and reason is false. (True)

### Conclusion
The correct answer is **Option 4: Assertion is false and reason is false**.

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