Explain the term root pressure.

The pressure in plants helps to drive fluids upward into the water-conducting vessels (xylem).

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The pressure in which the roots push into the soil in search of water and minerals.

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The pressure in which water is pulled upwards due to the suction force created by transpiration.

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The pressure that forces food from the stems into the root, via the phloem is called root pressure.

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Solution

The correct option is A
The pressure in plants helps to drive fluids upward into the water-conducting vessels (xylem).

Root pressure is osmotic pressure within the cells of a root system that causes sap to rise through a plant stem to the leaves. Root pressure occurs in the xylem of some vascular plants when the soil moisture level is high either at night or when transpiration is low during the day.

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Q. Go through the four statements given beIow:
I. Root pressure provides a light push in the overall process of water transport.
II. Most plants meet their water need by transpiration pull.
III. The greatest contribution of root pressure may be to re-establish the continuous chains of water molecule in the xylem vessel which often break under enormous tension created by transpiration.
IV. Guttation is the cause of transpiration pull.

The correct statements are

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