When a potted plant is flooded with water, the magnitude of root pressure
A
Increase
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B
Decrease
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C
Remain unchanged
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D
Become negative
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Solution
The correct option is C Decrease Root pressure develops when roots absorb mineral salts and water follows in inside the roots spontaneously. Development of root pressure is independent of transpiration pull and less transpiration increases root pressure. Under conditions of water logging roots are not able to respire properly. Hence, roots are not able to absorb mineral ions. Thus development of root pressure is hampered.