NEET 2017 Biology question

Biology Transport in Plants NEET 2017

Not in NEET syllabus

The water potential of pure water is

(1)ZeroCorrect
(2)Less than zero
(3)More than zero but less than one
(4)More than one

Answer: (1)

Solution

Water potential () is a measure of the free energy of water. By convention, the water potential of pure water at standard temperature and not under any pressure is taken to be zero. Addition of solute lowers the water potential

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Question ID VK-092191