VMMC VMMC Medical Solved Paper-2005

  • question_answer
    Who proposed the "Cohesion Theory" of ascent of sap?

    A)  Strasburger      

    B)         Godlewski         

    C)         Western                            

    D)  Dixon and Jolley

    Correct Answer: D

    Solution :

    Cohesion theory or transpiration pull theory was given by Dixon and Jolly (1884). It is based on three basic assumptions: (i) cohesion between water molecules. (ii) continuity of water column. (iii) transpirational pull.


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