Question

What is true for the water available in the soil?
A. Hollard = Chresard + Echard
B. Hollard = Chresard Echard
C. Chresard = Hollard + Echard
D. Echard = Hollard + Chresard

Answer 1

There is an equation which portrays the amount of water available in the soil. Some of the water is available to uptake by the plants but some water is not available for the uptake and rather in the soil to keep it moist. Thus some terms will sum up the whole equation making it easy to learn.

Complete answer:
Water is the basic requirement for a plant to grow. So the availability of water or moisture content in the soil will help us to know the fertility of the soil.

Available water is the difference between the maximum water the soil can hold – the wilting point where the plant can no longer extract water from the soil.

Let us understand the terms in the question.

Hollard- The entire content of water in the soil is Hollard. ‘Hol’ means water in greek.

Chresard – The water in the soil which is available for the plant growth is chresard. ‘Chreo” means need in greek.

Echard – The soil water that is unavailable to plants for growth is echard.

Thus we can conclude that Hollard makes the sum of all the water whether available for the plants to uptake and the water for their use.

Mathematically, we can form the equation as Hollard = Chresard + Echard.
So the answer is option A: Hollard = Chresard + Echard.

Note: Water regulates the Earth’s temperature. It is made of hydrogen and oxygen. The amount of water in the world has not changed since the formation of the world. 97% of the world’s water is salty and unfit to use. Our body is made of 66% of water.