Water absorption from the soil with the help of root hairs involves which types of forces?
(a) Due to transpiration pulled by aerial plant parts, a negative pressure is exerted down the roots that decrease the water potential of roots that favors the water uptake of soil. (b) The soil favors the water absorption from the soil caused by a decrease in water potential in the root cell. (c ) The cohesive force between the water molecules and the adhesive force between the water and the xylem cells keeps the pillar of water unbroken in the capillary of the xylem vessel. There exists a gradient of the water potential in the xylem vessel which prefers to absorb water from the soil starting from roots to leaf. (d) Soil water enters the root hairs, from which it reaches the xylem vessel, which has low water potential. As a result, root pressure is formed. This root pressure pushes water to the aerial plant parts.
