Assertion In angioperms, the conduction of water is more efficient because their xylem has vessels.
Reason Conduction of water by vessel elements is an active process in which energy is supplied by xylem parenchyma rich in mitochondria.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion.
B. It both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
C. If Assertion is true statement but Reason is false.
D. It both Assertion and Reason are false statements.

Explanation

To solve the assertion and reason question, let's break it down step by step:

### Step 1: Understand the Assertion
The assertion states that in angiosperms, the conduction of water is more efficient because their xylem has vessels.
- **Explanation**: Angiosperms, or flowering plants, possess specialized structures called vessels in their xylem. These vessels are wider and allow for a more efficient flow of water compared to tracheids, which are found in non-flowering plants. This structural adaptation enhances water conduction.

### Step 2: Understand the Reason
The reason states that the conduction of water by vessel elements is an active process in which energy is supplied by xylem parenchyma rich in mitochondria.
- **Explanation**: While the movement of water through xylem vessels is primarily a passive process driven by transpiration, the statement suggests that there is an active component involved. Xylem parenchyma cells can provide some metabolic support, but the primary movement of water through vessels is not considered an active process in the classical sense. However, the presence of mitochondria indicates that these cells can support metabolic activities.

### Step 3: Evaluate the Truth of the Statements
- **Assertion**: True. The presence of vessels in angiosperms does make water conduction more efficient.
- **Reason**: True, but it may be misleading. While there is some energy involved in maintaining the overall health of the xylem, the conduction of water itself is largely passive.

### Step 4: Determine the Relationship Between Assertion and Reason
Since both the assertion and reason are true, and the reason provides a correct explanation for the assertion, we conclude that the relationship is valid.

### Final Conclusion
Both the assertion and reason are true, and the reason correctly explains the assertion. Therefore, the correct answer is:
**Option 1: Both assertion and reason are true, and reason is the correct explanation of assertion.**

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