What is root pressure ?

Explanation

### Step-by-Step Text Solution for the Question "What is root pressure?"

1. **Definition of Root Pressure**: Root pressure is the pressure exerted by the roots of a plant to push water and nutrients upward through the plant, particularly during times when transpiration is low, such as at night.

2. **Mechanism of Water Uptake**:
- Roots absorb water from the soil through a process called osmosis.
- The soil contains water droplets, and when the roots are in contact with this water, they can take it up.

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