Root pressure is ................. | vedclass

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(B) Root pressure is a positive pressure that develops in the xylem sap of roots of plants. It is primarily a result of active absorption of mineral n

Vedclass · Accepted Answer

The combined turgor pressure of cortical cells.

Vedclass · Answer

(B) Root pressure is a positive pressure that develops in the xylem sap of roots of plants. It is primarily a result of active absorption of mineral nutrients from the soil by the root hairs. This leads to a decrease in the water potential of the root cells,causing water to enter the roots by osmosis. As water enters,it builds up a positive hydrostatic pressure in the xylem. This pressure is essentially the result of the combined turgor pressure of the cortical cells,which pushes the water upward through the xylem vessels.

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