In the elements of xylem,water rises to a certain height in the xylem vessels. Which pressure force in the xylem is useful for maintaining metabolic activities?

  • A
    Osmotic pressure
  • B
    Root pressure
  • C
    Atmospheric pressure
  • D
    Turgor pressure

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The ascent of xylem sap in plants is mainly accomplished by the :

$A$ : Root pressure is dynamic and is always a positive hydrostatic pressure.
$R$ : It is a universal phenomenon and develops under absorption lag.

Conduction of sap in plants occurs through

According to one vital force theory,the ascent of sap is due to the active pulsation of the innermost layer of the cortex. This theory was proposed by:

$A$ plant absorbs water from the soil on a sunny day by

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