EAMCET Medical EAMCET Medical Solved Paper-2008

  • question_answer
    Study the following table showing the components of water potential in closely arranged mesophyll cells namely A, B and C.
    Cell Osmotic potential (MPs) Osmotic potential (MPa)
    A -0.21 0.05
    B -0.22 0.02
    C -0.23 0.05
    Identify two of the following which show correct direction of water movement between two cells. i.   \[~A\to B\]                    ii.  \[B\to C\] iii.\[~C\to A\]                     iv. \[C\to B\] The correct pair is

    A)  i, ii                                         

    B)  ii, iii

    C)  i, iv                                       

    D)  ii, iv

    Correct Answer: C

    Solution :

                     Water potential in a cell is equal to algebraic sum of solute potential and pressure potential       
    Cell Water Potential DPD
    A - 0.21 + 0.05= - 0.16 +0.16
    B - 0.22 + 0.02= - 0.20 +0.20
    C - 0.23 + 0.05= - 0.18 +0.18
    Water potential is equal but opposite to DPD. Water move from low DPD cell to high DPD cell.


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