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JIPMER 2014
Exam
JIPMER
Year
2014
Subject
Botany
Chapter
Transport in Plants

JIPMER 2014 · Botany · Transport in Plants

The ruptere and fractionation do not usually occur in water column...

The ruptere and fractionation do not usually occur in water column in vessel/trachieds during the ascent of sap because of

Options

  1. Alignified thick walls
  2. Bcohesion and adhesion
  3. Cweak grauitational pull
  4. Dtranspiration pull

Correct answer

B. cohesion and adhesion

Step-by-step solution

The vertical conduction of water from root to arial part of plant is called ascent of sap. The water molecules remain joined to each other due to a force of attraction calledcohesion force. Attraction between water molecules and the walls of xylem is due to adhesion forces. These forces help to ensure the continuity of water column in xylem.
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