Set up an experiment to demonstrate root pressure.

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Aim : To demonstrate root pressure.

Material required : A potted plant, knife, rubber tube, glass tube, coloured water.

Procedure: Water the herbaceous plants and keep it for some time. Then cut off the upper part of the stem and attach a narrow glass tube on it. Fill the glass tube with coloured water. Mark the level of water and connect a manometer to the glass tube. Record your observations after some time.

Observations: The colour water rises in level and the manometer shows the root pressure by the increase in mercury level.

Conclusion: The water level increases as a result of root presure. The root pressure is of a small magnitude as shown by the manometer.

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