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Question

Why hygroscopic water is not available to plants?

A
Because its Ψw is greatly increased
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B
Because its DPD is greatly decreased
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C
Because its Ψw becomes strongly negative
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D
Because its Ψw is increased and DPD is decreased
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Solution

The correct option is C Because its Ψw becomes strongly negative
Hygroscopic water is the water tightly held around soil particles as a thin film. It is not available to plants, because it has very low water potential (strongly negative). In other words, it has very less water molecules or it is present as an extremely thin film.

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