Constituents of Soil


 
 
Concept Explanation
 

Constituents of Soil

Constituents of Soil:

1. Water: in soil is present between and at the surface of soil particles.

2 Air: The spaces between the particles of soil are occupied by air. The amount of air in the soil varies from soil to soil. This air is required for the respiration of plants

3. Organic matter: Organic matter is added to the soil by the decomposition or decay of dead organisms such as plants, animals and micro-organisms. The excreta or organic matter are also added to the soil.

4. Inorganic matter: Inorganic nutrients come into the soil from the rock from which the soil is formed. The soil gets nutrients from time to time in the form of manure (organic matter) and fertilizers.

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Sample Questions
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Question : 1

Gravel contains  __________  particles.

Right Option : A
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Question : 2

Soil contains rock particle and  ___________ .

Right Option : C
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Question : 3

Soil contains rock particles and _________ .

Right Option : C
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