FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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soil aeration
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tilth
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organic matter
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symbiosis
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pore space
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Detailed explanation-1: -Humus is dark, organic material that forms in soil when plant and animal matter decays.
Detailed explanation-2: -Organic matter consists of dead and decaying substances such as dried leaves, twigs, grasses, vegetables, microbes, and other nutrients. It can be easily produced by the process called composting. Hence, Humus is dark-colored partially decayed organic matter rich in nutrients.
Detailed explanation-3: -humus: The partially decayed remains of plants and animals; forms the organic portion of soil.
Detailed explanation-4: -Humus is the result of successive steps in the decomposition of organic matter. Because of the complex structure of humic substances, humus cannot be used by many micro-organisms as an energy source and remains in the soil for a relatively long time.
Detailed explanation-5: -Final answer: Dead and decayed residue of plants and animals is called humus.