FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -The different layers of soil are: Topsoil. Subsoil.
Detailed explanation-2: -The soil consists of multiple layers that are collectively referred to as the soil profile. There are three primary layers of the soil profile. These layers are the topsoil, the subsoil, and the bedrock.
Detailed explanation-3: -Answer and Explanation: The second soil layer, or second horizon is called the A horizon. It is rich in minerals and often referred to as top soil. The organic matter gives this horizon its rich brown color. This is the type of soil farmers want to use to encourage ample plant growth.
Detailed explanation-4: -Soils are named and classified based on their horizons. The soil profile has four distinct layers: 1) O horizon; 2) A horizon; 3) B horizon, or subsoil; and 4) C horizon, or soil base (Figure 31.2. 2). The O horizon has freshly decomposing organic matter-humus-at its surface, with decomposed vegetation at its base.