What is root pressure ?

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Root Pressure**: Root pressure is the pressure exerted in the roots of plants that helps in the upward movement of water and nutrients from the soil into the vascular tissue of the plant.

2. **Active Transport of Ions**: The process begins with the active transport of ions from the soil into the vascular tissue of the root. Active transport requires energy in the form of ATP and involves specific proteins that help move ions against their concentration gradient.

3. **Osmosis of Water**: As ions are actively transported into the vascular tissue, they create a higher concentration of solutes inside the root compared to the surrounding soil. This difference in concentration causes water to move into the root through osmosis, which is the movement of water from an area of lower solute concentration to an area of higher solute concentration.

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