Question
Physics Question on tension
Transpiration Cohesion tension theory operates in ............
A
Active absorption
B
Active and passive absorption
C
Passive absorption
D
Apoplastic movement
Answer
Passive absorption
Explanation
Solution
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).