Assertion: The nematode parasite could not survive in a transgenic plant expressing specific interfering RNA
Reason :The sense & anti -sense RNA in host are complemenatry & forms a ds RNA, thus silenced the specific m RNA of nematod

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion
B. It both Assertion & Reason are True but Reason is not a correct explanation of the Assetion
C. If Assertion is True but the Reason is False
D. If both Assertion & Reason are false

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that the nematode parasite cannot survive in a transgenic plant that expresses specific interfering RNA. This suggests that the transgenic plant has a mechanism to combat the nematode.

**Hint**: Consider the role of transgenic plants in pest resistance.

2. **Understanding the Reason**: The reason provided explains that the sense and antisense RNA in the host plant are complementary. When these strands come together, they form double-stranded RNA (dsRNA), which leads to the silencing of the specific mRNA of the nematode.

**Hint**: Think about how RNA interference works and its effect on mRNA.

3. **Connecting Assertion and Reason**: The assertion and reason are connected. The formation of dsRNA from complementary strands leads to the silencing of the nematode's mRNA, which is essential for its survival. If the nematode cannot produce the proteins it needs due to silenced mRNA, it will not survive.

**Hint**: Reflect on the relationship between mRNA silencing and the survival of parasites.

4. **Conclusion**: Both the assertion and reason are true statements. The reason accurately explains why the nematode cannot survive in the transgenic plant expressing specific interfering RNA.

**Hint**: Evaluate if both statements are true and if the reason supports the assertion.

5. **Final Answer**: Therefore, the correct conclusion is that both the assertion and reason are true, and the reason correctly explains the assertion.

### Summary of the Solution:
- The nematode parasite cannot survive in a transgenic plant due to the action of specific interfering RNA.
- The complementary nature of sense and antisense RNA leads to the formation of dsRNA, which silences the nematode's mRNA, preventing protein synthesis and survival.
- Both statements are true, and the reason supports the assertion.