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  • Which of the following physical forces are supposed to be responsible for ascent as sap?Option: 1 Imbibition<st

Which of the following physical forces are supposed to be responsible for ascent as sap?

Option: 1

Imbibition


Option: 2

Capillary force


Option: 3

Transpiration pull and cohesion


Option: 4

Root pressure


Answers (1)

best_answer

 

 

Physical Theories -

  • According to these theories, the ascent of sap is due to some physical forces.
  • Boehm’s Concept: It suggests that capillary action and atmospheric pressure causes ascent of sap. As per this concept, water can rise up to 32 ft.
  • Sach’s Concept: It suggests that the force of imbibition causes ascent of sap.
  • The most widely accepted theory called Cohesion of Water Theory or Transpiration Pull Theory was given by Dixon and Jolly in 1894.

- 

 

The most widely accepted theory called Cohesion of Water Theory or Transpiration Pull Theory was given by Dixon and Jolly in 1894. Hence, the correct answer is option c.

 

Posted by

Deependra Verma

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