Assertion: Archaebacteria differ from other bacteria only in structure not, in resistance.
Reason: Cell wall of Archebacteria is made upof complex peptidoglycans instead of simple peptioglycane.

Options

A. If both assertion and Reason are true and the reason is a correct explanation of the assertion.
B. If both Assertion and Reason are true but Reason is not a correct explanation 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 "Archaebacteria differ from other bacteria only in structure, not in resistance." To evaluate this, we need to understand the characteristics of Archaebacteria in comparison to Eubacteria (the common bacteria).

2. **Analyzing the Structure of Archaebacteria**: Archaebacteria have unique structural features, particularly in their cell membranes. The cell membranes of Archaebacteria are composed of glycerol ether lipids, which differ from the glycerol ester lipids found in Eubacteria. This structural difference contributes to their stability and ability to survive in extreme environments.

3. **Evaluating Resistance**: The assertion claims that the only difference is structural, but Archaebacteria are known to be more resistant to extreme conditions (like high temperatures and acidic environments) compared to Eubacteria. This indicates that they also differ in terms of resistance, making the assertion incorrect.

4. **Understanding the Reason**: The reason given is that "the cell wall of Archaebacteria is made up of complex peptidoglycans instead of simple peptidoglycans." To analyze this, we need to look at the composition of the cell walls of Archaebacteria.

5. **Cell Wall Composition**: The cell walls of Archaebacteria do not contain peptidoglycan at all. Instead, they are composed of various polysaccharides and proteins, and some have cell walls made of pseudomurein, which is different from the peptidoglycan found in Eubacteria. This makes the reason incorrect.

6. **Conclusion**: Since both the assertion and the reason are incorrect, we conclude that the correct answer is that both statements are false.

### Final Answer:
Both the assertion and reason are false.