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Root pressure develops due to:

1. Low osmotic potential in soil
2. Passive absorption
3. Increase in transpiration
4. Active absorption

Correct answer: Increase in transpiration

Solution

Root pressure is the pressure exerted by the roots of a plant to push water and minerals up the xylem. It develops due to an increase in transpiration, which creates a negative pressure in the xylem that pulls water up from the roots.

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