Which of the following is the unit of measurement of water potential?

Watts

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Joule

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Pascal

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Litre

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Cubic centimeter

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Solution

The correct option is A Pascal
Water potential depends on the number of water molecules in the system. More the number of water molecules in the system, greater the water potential. Hence, water potential of pure water is maximum. The water potential of pure water is assumed to be zero. So water potential of all solutions is negative. Water potential is measured in units of pressure, e.g., Pascal.

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