Dear student,
​When the concentration of soil solute is low, the absorption of water by the root is increased. Absorption is carried out by root therefore it is not mentioned in the question.
The concentration of solute in the soil is less then the water potential of the soil is more therefore diffusion of water occurs along the concentration gradient into the root where solute concentration is high and water potential is low. In this way absorption of water occurs in root when the concentration of solute is low in the soil.
Regards
​When the concentration of soil solute is low, the absorption of water by the root is increased. Absorption is carried out by root therefore it is not mentioned in the question.
The concentration of solute in the soil is less then the water potential of the soil is more therefore diffusion of water occurs along the concentration gradient into the root where solute concentration is high and water potential is low. In this way absorption of water occurs in root when the concentration of solute is low in the soil.
Regards