9th Class Science The Fundamental Unit of Life Question Bank MCQs - The Fundamental Unit of Life

  • question_answer
    Match the following columns.
      Column I   Column II
    A. Hypotonic solution 1. Cell will shrink
    B. Hypertonic 2. Cell will swell up solution
    C. Isotonic solution 3. Cell will stay the same
    Codes

    A) A-3,  B-2,  C-1

    B) A-1,  B-2,  C-3

    C) A-3,  B-1,  C-2

    D) A-2,  B-1,  C-3

    Correct Answer: D

    Solution :

    [d]
    The correct match is A-2, B-1, C-3
    In hypotonic solution, the surrounding medium has higher concentration of water than that of the cell. So, the water molecules will more out of the cell and it will shrink.
    In isotonic solution, the medium has exactly the same water concentration as the cell, there will be no net movement of water across the cell membrane. The cell will stay the same size.
     


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