Assertion: Although Bacterial structure is very simple yet they are very complex in behaviour.
Reason: Bacteria as a group show most extensive metabolic diversity.

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

To solve the assertion and reason question regarding bacteria, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Although Bacterial structure is very simple yet they are very complex in behaviour."
- Bacteria are prokaryotic organisms, meaning they lack membrane-bound organelles and have a simpler cellular structure compared to eukaryotic cells.

2. **Evaluating the Assertion**:
- The assertion is true. Bacteria do have a simple structure, but their behaviour is complex. They can adapt to various environments, reproduce rapidly, and exhibit diverse metabolic processes.

3. **Understanding the Reason**:
- The reason states that "Bacteria as a group show most extensive metabolic diversity."
- Bacteria can perform various metabolic processes, including photosynthesis, chemosynthesis, and fermentation. They can utilize different energy sources and carbon sources.

4. **Evaluating the Reason**:
- The reason is also true. Bacteria exhibit a wide range of metabolic capabilities, which contributes to their ecological success and adaptability.

5. **Linking Assertion and Reason**:
- The reason provides an explanation for the assertion. The metabolic diversity of bacteria allows them to exhibit complex behaviours despite their simple structure.

6. **Conclusion**:
- Both the assertion and reason are true, and the reason correctly explains the assertion. Therefore, the correct answer is that both the assertion and reason are true, and the reason is the correct explanation of the assertion.

### Final Answer:
- **Option A**: Both assertion and reason are true, and reason is the correct explanation of assertion.

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