NEET Biology question

Not in NEET syllabus

The rupture and fractionation do not usually occur in the water column in vessels/tracheids during the ascent of sap because of

(A)Lignified thick walls
(B)Cohesion and adhesionCorrect
(C)Weak gravitational pull
(D)Transpiration pull

Answer: (B)

Solution

Cohesive forces between water molecules give the water column great tensile strength (able to withstand a pull of up to about 30 atm or more in narrow tracheary elements), while adhesion of

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Question ID VK-127556