Assertion : Conducting tissues, especially xylem show the greatest reduction in submerged hydrophytes.
Reason : Hydrophytes live in water so no need of tissues.

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Explanation

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that conducting tissues, especially xylem, show the greatest reduction in submerged hydrophytes. This means that in plants that live submerged in water, the xylem tissue is not well-developed.

2. **Understanding the Reason**: The reason given is that hydrophytes live in water, so there is no need for conducting tissues. This implies that because they are surrounded by water, they do not require specialized tissues for the conduction of water and nutrients.

3. **Analyzing the Assertion**: It is true that submerged hydrophytes have reduced xylem. This is because they are constantly in contact with water, which allows them to absorb water directly through their surfaces rather than needing a specialized tissue for long-distance transport.

4. **Analyzing the Reason**: The reason is misleading. While it is true that hydrophytes live in water, they still require some conducting tissues for the transport of nutrients. Therefore, the assertion is true, but the reason is false.

5. **Conclusion**: Based on the analysis, we can conclude that the assertion is true, while the reason is false. Thus, the correct answer is that the assertion is true, but the reason is incorrect.

### Final Answer:
- Assertion: True
- Reason: False