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NEET Biology Transport In Plants Question Bank Self Evaluation Test - Transport in Plants

  • 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 (MPa) Pressure Potential (MPa)
    A B C -0.87 -0.92 -0.68 0.44 0.34 0.27
    Which of the cells (A, B, C) have the highest water potential?

    A) A                                 

    B) B

    C) C                     

    D)        All of these

    Correct Answer: C

    Solution :

    [c] Water potentials of the given cells are V = \[\psi ={{\psi }_{s}}+{{\psi }_{p}}\] A = -0.87 + 0.44 = -0.43 B = -0.92 + 0.34 = -0.58 C =  -0.68 + 0.27 = -0.41 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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