ICSE Class X Biology 2014 Solved Papers

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A candidate in order to study the process of osmosis has taken 3 potato cubes and put them in 3 different beakers containing 3 different solutions. After 24 hours, in the first beaker the potato cube increased in size, in the second beaker the potato cube decreased in size and in the third beaker there was no change in the size of the potato cube. The following diagram shows the result of the same experiment:
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Question : 43
Total: 93
In beaker 3 the size of the potato cube remains the same. Explain the reason in brief.
Solution:  
In beaker 3 , the concentration of potato cube and the medium is same. So there is no osmosis taking place therefore the size of cube remains same.
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