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EAMCET Medical EAMCET Medical Solved Paper-2009

  • question_answer
    The osmotic potential and pressure potential of three cells (A,B,C) located in different parts of an actively transpiring plant are given below
    Cell Osmotic Potential (MP a) Osmotic Potential (MP a)
    A -0.87 0.44
    B -0.92 0.34
    C -0.68 0.27
          Identify these three cells as rot hair, root cortical and leaf mesophyll cells respectively. The correct answer is

    A)  A, B, C                                 

    B)  A, C, B

    C)  C, A, B                                 

    D)  B, C, A

    Correct Answer: C

    Solution :

                     Water potentials of the given cells are \[\psi ={{\psi }_{S}}+{{\psi }_{P}}\] A= -0.87 + 0.44 = - 0.43 B= -0.92 + 0.34 = - 0.58 C= -0.68 + 0.27 = - 0.47 As water moves from greater water potential to less, root hair, root cortical and leaf mesophyll cells are C, A, B respectively.


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