NEET · BiologyMedium
A plant cell is placed in a solution. If the cell becomes flaccid, what can be concluded about the water potential of the external solution relative to the cell?
- A.The external solution is hypertonic to the cell sap
- B.The external solution is hypotonic to the cell sap
- C.The external solution is isotonic to the cell sap
- D.The water potential of the solution is higher than that of the cell
Show correct answer & step-by-step solution
Correct answer: A — The external solution is hypertonic to the cell sap
Solution
- A flaccid cell has lost water to its surroundings.
- Water moves from a region of higher water potential to a region of lower water potential.
- For water to leave the cell, the external solution must have a lower water potential than the cell.
- A solution with lower water potential is hypertonic. Hence the answer is (A).
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