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Which of the following elements is responsible for maintaining turgor in cells?

1. (a) Magnesium
2. (b) Sodium
3. (c) Calcium
4. (d) Potassium

Correct answer: (d) Potassium

Solution

Potassium is the major cation in plant cells and helps maintain osmotic potential, which draws water into the vacuole and keeps cells turgid. Magnesium, sodium, and calcium do not play the primary role in maintaining turgor.

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