Assertion: Life on earth originated by interaction of the various chemical substances in the broth of the sea.
Reason :The first organisms were, perhaps the chemoautotrophs and anaerobes.

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion**: The assertion states that life on Earth originated through the interaction of various chemical substances in the broth of the sea. This aligns with the theories proposed by scientists like Oparin and Haldane, who suggested that early Earth had a primordial soup where simple inorganic molecules combined to form complex organic molecules.

2. **Exploring the Reason**: The reason provided states that the first organisms were possibly chemoautotrophs and anaerobes. Chemoautotrophs are organisms that obtain energy by oxidizing inorganic substances and can synthesize their own food, while anaerobes are organisms that do not require oxygen for growth.

3. **Linking the Assertion and Reason**: According to Oparin and Haldane's theory, the first life forms likely emerged from simple organic compounds. The first organisms were believed to be heterotrophs, which consume organic substances, rather than autotrophs. Therefore, while the assertion is correct, the reason provided does not accurately reflect the sequence of how life originated.

4. **Conclusion**: The assertion is true, as it reflects the scientific understanding of the origin of life, while the reason is incorrect because it misrepresents the nature of the first organisms. Thus, the correct answer is that the assertion is correct, but the reason is incorrect.

**Final Answer**: Assertion is correct; Reason is incorrect.

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