Transpiration: Factors and Mechanism · NCERT Biology

The 'tensile strength' of water in xylem refers to its ability to:

  1. Dissolve minerals
  2. Resist a pulling force
  3. Evaporate at low temperatures
  4. Filter through cell walls
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Correct answer: Resist a pulling force

High tensile strength is the ability to resist a pulling force without the column breaking. Because of cohesion and adhesion, the water column in the xylem can withstand the immense tension created by transpiration.

Difficulty: Medium Question 14 of 20

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