Question

Where is water available for absorption by the roots? What is the meaning of combined

water?​

Answer 1

Answer:

Capillary water in soil is available for root absorption. Capillary water fills the spaces between non- colloidal soil particles and forms films around them. This water is held by the capillary forces around and between the particles and is of greatest importance to plant life.

Answer 2

Capillary water in the soil is available for the roots for absorption.

• The mechanism for root absorption depends on the soil texture. The soil is a solid matrix in which the soil particles have spaces between each other.

• These spaces are filled by the capillary water and thus form films around them.

• Capillary water (water present between spaces of soil) means the water that is left out in the soil after the gravitational water is drained out( movement of water towards gravity).

• The capillary force keeps the water and the soil particles in their position.

• The plants' roots use capillary action to bring the water from the soil through capillaries

• Combined water means the water which is in the form of hydrated oxides of silicon, aluminum, etc.