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प्रश्न
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उत्तर
Root Pressure is the pressure exerted on the liquid contents of the cortical cells of the root, under fully turgid condition, forcing a quantity of water into the xylem vessels and through them upwards into the stem up to a certain height.
Demonstration of Root pressure:
(a) Take a well matured healthy herbaceous plant.
(b) The stem of the plant is cut a few centimeters above the base with a sharp knife and attached to a manometer through a rubber tube.
(c) After a few hours, the level of mercury rises in the manometer.
(d) This is due to the pressure created by water exuded from the cut end of the plant on account of root pressure generated due to entry of water in the root cells.
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संबंधित प्रश्न
State whether the following statement is true or false. Rewrite the false statement correctly.
Water absorption mainly occurs through the root-hair.
Draw a magnified view of the root-hair, and describe, how it helps in the absorption of water from the soil.
What would happen to the root hair of a potted plant if the soil was watered with an extremely concentrated solution of sodium chloride?
Differentiate between the following
Permeable and Semi-permeable membrane.
Multiple Choice Question:
In soil, water available for absorption by root is ______.
Multiple Choice Question:
The most widely accepted theory for ascent of sap is ______.
Trace the pathway followed by water molecules from the time it enters a plant root to the time it escapes into the atmosphere from a leaf.
____________ regions are present in a typical root.
Which plant does tissue transport water and minerals from the roots to the leaf?
Why and how does water enter continuously into the root xylem?
