Question:
Transpiration Cohesion tension theory operates in ............
Transpiration Cohesion tension theory operates in ............
Updated On: Aug 1, 2022
- Active absorption
- Active and passive absorption
- Passive absorption
- Apoplastic movement
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The Correct Option is C
Solution and Explanation
Transpiration pull or cohesion-tension theory was originally proposed by Dixon and Jolly in 1894 and further improved by Dixon in 1914. According to this theory, due to transpiration, the water column inside theplant comes under .tension. This is called 'transpiration pull'. On account of this tension, the water column is pulled up passively from below to the top of the plant (almost like a rope).
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Concepts Used:
Tension
A force working along the length of a medium, especially if this force is carried by a flexible medium like cable or rope is called tension. The flexible cords which bear muscle forces to other parts of the body are called tendons.
Net force = 𝐹𝑛𝑒𝑡 = 𝑇−𝑊=0,
where,
T and W are the magnitudes of the tension and weight and their signs indicate a direction, be up-front positive here.
Read More: Tension Formula