Assertion : IVF is fertilisation outside the body of woman
Reason : The zygote upto 8 blastomeres could be transferred into the Fallopian tube

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 question, we will break it down into steps.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "IVF is fertilization outside the body of a woman."
- IVF, or In Vitro Fertilization, indeed involves the fertilization of an egg by sperm outside the female body, typically in a laboratory setting.

2. **Understanding the Reason**:
- The reason provided states that "The zygote up to 8 blastomeres could be transferred into the Fallopian tube."
- This is also true. After fertilization, the zygote divides and can be transferred to the Fallopian tube when it reaches the 8-cell stage (blastomeres).

3. **Evaluating the Relationship**:
- Both the assertion and the reason are correct statements. However, we need to determine if the reason correctly explains the assertion.
- The assertion focuses on the process of fertilization occurring outside the body, while the reason discusses what happens to the zygote after fertilization.

4. **Conclusion**:
- While both statements are true, the reason does not serve as a correct explanation of the assertion. The assertion is about the process of IVF itself, while the reason describes a subsequent step in the IVF process.

5. **Final Answer**:
- The correct answer is that both the assertion and the reason are true, but the reason is not the correct explanation for the assertion. Thus, the answer is **B**: Both assertion and reason are true, but the reason is not the correct explanation of the assertion.