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Question

What is true about the water potential of vessels and tracheids, which are by and large filled with water? Their water potential


A
Is less than root hairs and more than cortex
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B
Is more than root hair and less than cortex
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C
Is less than root hair and cortex
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D
Is more than root hair and cortex
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Solution

The correct option is C Is less than root hair and cortex
Water potential of pure water is maximum and its value is zero. Hence, water potential of all solutions is negative. Water flows from a region of higher water potential to a region of lower water potential because a region having higher water potential has more number of water molecules as compared to the region having lesser water potential. Water potential in vascular tissues will be less than the water potential of cortex cells, then only water will flow from cortex to cells of vascular tissues.

Biology

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