Assertion : In vasectomy, a small part of the vas deferens is removed or tied up
Reason : In tubectomy, a small part of the Fallopian tube is removed or tied up.

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

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion:**
- The assertion states that "In vasectomy, a small part of the vas deferens is removed or tied up."
- Vasectomy is a surgical procedure for male sterilization where the vas deferens, the duct that carries sperm from the testicles, is cut or blocked to prevent sperm from entering the urethra. This means that sperm cannot mix with semen and thus cannot fertilize an egg.

2. **Evaluating the Assertion:**
- The assertion is true because vasectomy indeed involves the removal or tying of a small part of the vas deferens to achieve sterilization.

3. **Understanding the Reason:**
- The reason states that "In tubectomy, a small part of the Fallopian tube is removed or tied up."
- Tubectomy is a surgical procedure for female sterilization where a part of the Fallopian tubes is cut or blocked to prevent eggs from traveling from the ovaries to the uterus, thus preventing pregnancy.

4. **Evaluating the Reason:**
- The reason is also true as tubectomy involves the removal or tying of a small part of the Fallopian tube to achieve sterilization.

5. **Analyzing the Relationship Between Assertion and Reason:**
- While both the assertion and reason are true, they are independent statements about different procedures (vasectomy for males and tubectomy for females).
- The reason does not explain the assertion; it simply states another fact about a different sterilization method.

6. **Conclusion:**
- Since both the assertion and reason are true, but the reason does not explain the assertion, the correct option is that both are true but the reason is not the correct explanation of the assertion.

**Final Answer:**
- Both assertion and reason are true, but the reason is not the correct explanation of the assertion (Option B).

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