Assertion : Algae and fungi switch to asexual method of reproduction before the onset of adverse conditions.
Reason : Asexual reproduction may introduce variations and leads to the formation of many clones.

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

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that algae and fungi switch to asexual reproduction before adverse conditions arise. We need to evaluate if this statement is true or false.

2. **Evaluating the Assertion**: In reality, algae and fungi typically reproduce asexually during favorable conditions. When adverse conditions approach, they often switch to sexual reproduction as a strategy for survival. Therefore, the assertion is **false**.

3. **Understanding the Reason**: The reason provided states that asexual reproduction may introduce variations and lead to the formation of many clones. We need to evaluate if this statement is true or false.

4. **Evaluating the Reason**: Asexual reproduction generally produces genetically identical offspring (clones) and does not introduce genetic variation. Variations are primarily introduced through sexual reproduction, where genetic material from two parents combines. Thus, the reason is also **false**.

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

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

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