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Water absorbed by trees rises from the roots to the leaves mainly by the process of

Question and options

Water absorbed by trees rises from the roots to the leaves mainly by the process of
  1. Transpiration pull
  2. Evaporation
  3. Convection
  4. Photosynthesis

Answer and explanation

Correct answer: A - Transpiration pull
The ascent of sap from roots to leaves is mainly driven by transpiration pull (cohesion-tension). Evaporation and convection are physical processes outside the plant; photosynthesis uses water but does not lift it.

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