Assertion : Mitochondria are called 'Power house' of the cell.
Reason : Mitochondria produce cellular energy in the from of ATP.

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 analyze the given assertion and reason, we will break down the statements and evaluate their validity step by step.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Mitochondria are called 'Power house' of the cell."
- This is a widely accepted fact in biology. Mitochondria are indeed referred to as the powerhouse of the cell due to their role in energy production.

2. **Understanding the Reason**:
- The reason states that "Mitochondria produce cellular energy in the form of ATP."
- This statement is also true. Mitochondria are responsible for producing adenosine triphosphate (ATP), which is the primary energy currency of the cell.

3. **Evaluating the Relationship**:
- The assertion is true because mitochondria are known as the powerhouse of the cell.
- The reason is also true because mitochondria produce ATP, which is the energy used by cells.
- Furthermore, the reason provides a correct explanation for the assertion, as the energy production in the form of ATP is what qualifies mitochondria as the powerhouse of the cell.

4. **Conclusion**:
- Since both the assertion and reason are true, and the reason correctly explains the assertion, we conclude that both statements are true and the reason is the correct explanation of the assertion.

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

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