Rate of upward movement of water through the xylem in the plants may reach upto

Options

A. 15 m/hr
B. 1.5 m/hr
C. 15 m/min
D. 1.5 m/min

Answer

To determine the rate of upward movement of water through the xylem in plants, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Xylem Function**:
- Xylem is a type of vascular tissue in plants responsible for the transport of water and minerals from the roots to the leaves.

2. **Water Absorption**:
- Roots absorb water from the soil. This water enters the xylem tissue present in the roots.

3. **Root Pressure**:
- The absorption of water into the xylem creates a pressure buildup known as root pressure. This pressure helps push water upward through the xylem.

4. **Cohesion of Water Molecules**:
- Water molecules are held together by hydrogen bonds, which creates cohesion. This property allows water to move in a continuous column through the xylem.

5. **Role of Transpiration**:
- Transpiration, the process of water evaporation from the leaf surface, creates a suction effect that pulls water upward through the xylem vessels.

6. **Maximum Rate of Water Movement**:
- The maximum rate of upward movement of water through the xylem can reach up to 15 meters per hour.

7. **Conclusion**:
- Therefore, the answer to the question is that the rate of upward movement of water through the xylem in plants may reach up to **15 meters per hour**.