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  • Osmotic theory of active water absorptionOption: 1 Assumes soil solution to be hypertonicOption: 2</str

Osmotic theory of active water absorption

Option: 1

Assumes soil solution to be hypertonic


Option: 2

Assumes soil solution to be isotonic


Option: 3

Assumes soil solution to be hypotonic


Option: 4

None of these


Answers (1)

best_answer
 

Osmotic theory of active water absorption:

  • It was proposed by Atkins
  • Soil water is a diluted solution.
  • It is hypotonic w.r.t the cell sap of the root hair cells.
  • Therefore, the root hair cells absorb water through endosmosis.
  • There is no expenditure of metabolic energy.
  • The absorbed water moves according to the DPD, that is, from low DPD to high DPD.

Osmotic theory of active water absorption assume soil water is a diluted solution. It is hypotonic w.r.t the cell sap of the root hair cells. Hence, the correct answer is option c.

Posted by

Irshad Anwar

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