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  3. NEET

NEET AIPMT SOLVED PAPER 2003

  • question_answer
                    Stomata of a plant open due to:                                                                                                                       

    A)                 influx of hydrogen ions                      

    B)                 influx of calcium ions

    C)                 influx of potassium ions     

    D)                 efflux of potassium ions

    Correct Answer: C

    Solution :

                    Accumulation of \[{{K}^{+}}\] ions in the guard cells during the day time is responsible for migration of water molecules from subsidiary cells to guard cells. This increases turgidity of guard cells and thus stomata become open.


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