$ The Heterotroph theory of origin of life was proposed by Haldane.
! That part of earth which is without any traces of life is called Abiotic earth.

Options

A. If both As and R are correct and R is correct explanation of As
B. If both As and R are correct but R is not correct explanation of As
C. If As is correct, R is wrong
D. If both As and R are wrong.

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "The Heterotroph theory of origin of life was proposed by Haldane."
- The heterotroph theory suggests that the first living organisms were heterotrophs, meaning they could not produce their own food and relied on other organic substances for nutrition.

2. **Evaluating the Reason**:
- The reason provided is "That part of earth which is without any traces of life is called Abiotic earth."
- The term "abiotic" refers to non-living components of the environment, indicating areas devoid of life.

3. **Assessing the Correctness of Statements**:
- Both the assertion and reason are correct statements. Haldane did propose the heterotroph theory, and the definition of abiotic earth is accurate.

4. **Determining the Relationship Between Assertion and Reason**:
- While both statements are correct, the reason does not explain the assertion. The concept of abiotic earth does not provide a rationale for the heterotroph theory.

5. **Conclusion**:
- The correct answer is that both the assertion and reason are correct, but the reason is not a correct explanation of the assertion.

### Final Answer:
Both assertion and reason are correct but reason is not a correct explanation of assertion.

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