Question

Root pressure is maximum when

• A. transpiration is high and absorption is very low
• B. transpiration is very low and absorption is high
• C. transpiration is very high and absorption is also high
• D. transpiration and absorption both are low

Answer 1

The correct option is B transpiration is very low and absorption is high

Root pressure is the positive pressure that develops in the roots of the plants by the flow of water inside the root due to the active absorption of nutrients from soil. Root pressure is maximum when transpiration is very low and absorption is high because there is loss of water in transpiration while in absorption, there is gain of water in the plant.