Soil water is able to reach xylem element of the root because of

Imbibition

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Gradient of suction pressure

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Gradient of turgor pressure

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Ion concentration of water

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Solution

The correct option is A Gradient of suction pressure
Diffusion Pressure Deficit (DPD) is also called as suction pressure. In a system water moves along the DPD (or suction pressure) gradient. Water always moves from a region of lower DPD to a region of higher DPD. In a plant, water moves from soil to root hairs to the cortex to xylem to leaf mesophyll to the atmosphere. This journey of water occurs along the DPD gradient.
So, the correct answer is option B.

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