Assertion : Fermentation is the incomplete oxidation of glucose into lactic acid or ethanol.
Reason : It takes place under anaerobic conditions in prokaryotes only.

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 "Fermentation is the incomplete oxidation of glucose into lactic acid or ethanol."
- This is true because fermentation involves the breakdown of glucose without the complete oxidation that occurs in aerobic respiration, resulting in products like lactic acid (in animals) or ethanol (in yeast).

2. **Understanding the Reason:**
- The reason states that "It takes place under anaerobic conditions in prokaryotes only."
- This statement is partially true because fermentation does occur under anaerobic conditions, but it is not limited to prokaryotes. Eukaryotes, such as yeast (a fungus), also undergo fermentation.

3. **Analyzing the Relationship:**
- The assertion is correct, as fermentation is indeed an incomplete oxidation of glucose.
- The reason is incorrect because fermentation occurs in both prokaryotes (like bacteria) and eukaryotes (like yeast and in muscle cells of animals).

4. **Conclusion:**
- Therefore, the correct evaluation is that the assertion is true, but the reason is false.

**Final Answer:**
- Assertion is true; Reason is false.

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