Assertion :In `C_(4)` plants, the chloroplasts of bundle sheath cells are granal.
Reason: PS II is mostly found in the appressed part of granum.

Options

A. If both Assertion and Reason are true and the Reason is the correct explanation
B. If both Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion.
C. If Assertion is true, but Reason is false.
D. If both Assertion and Reason are false.

Answer

To solve the question regarding the assertion and reason statements about C4 plants, we can break it down into clear steps:

### Step-by-Step Solution:

1. **Understand the Assertion**:
- The assertion states that in C4 plants, the chloroplasts of bundle sheath cells are granal.
- In C4 plants, the bundle sheath cells contain chloroplasts that are agranal (meaning they lack granum). Therefore, this assertion is **false**.

2. **Understand the Reason**:
- The reason states that PS II (Photosystem II) is mostly found in the appressed part of granum.
- While it is true that PS II is located in the thylakoid membranes of chloroplasts, it is primarily found in the granal thylakoids, which are present in chloroplasts that have granum. However, since the assertion regarding the bundle sheath cells is false, the relevance of this reason to the assertion is also **false**.

3. **Evaluate the Relationship**:
- Since both the assertion and reason are false, we conclude that the correct option is that both the assertion and reason are false.

4. **Final Conclusion**:
- Therefore, the correct answer to the question is that both the assertion and reason are false.