Name the following by choosing the correct option:
The pressure developed in the roots due to continuous inward movement of water by cell to cell osmosis:
Topic: Root pressure
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Pick an option and check your answer. The full worked answer is below either way.
Answer
(a) Root Pressure.
ROOT PRESSURE is the positive pressure that develops in the root xylem as water is pushed inward from cell to cell by osmosis. It helps to drive water up the stem.
Distinguish it from the other two real pressures offered, both of which act INSIDE A SINGLE CELL: TURGOR PRESSURE — the outward push of the cell contents against the cell wall WALL PRESSURE — the equal and opposite inward push of the wall against the contents Root pressure is different in kind: it acts on the whole ROOT SYSTEM, not within one cell.
Root pressure is also responsible for GUTTATION — at night, when the stomata are closed and transpiration has stopped, root pressure continues to push water up and forces droplets out through the hydathodes.
Root Pressure.