Soil Composition Quiz
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Questions and Answers

What is the main source of energy for soil organisms?

  • Soil air
  • Mineral soil
  • Organic soil (correct)
  • Soil water
  • Which type of soil increases the ability of soil to resist drastic pH changes?

  • Soil water
  • Soil air
  • Organic soil
  • Mineral soil (correct)
  • What occupies the pore spaces in the soil that are not occupied by water?

  • Organic soil
  • Mineral soil
  • Soil air (correct)
  • Soil water
  • Which gas is a principal component of atmospheric air but not a significant component of soil air?

    <p>Oxygen (O2)</p> Signup and view all the answers

    What function does soil serve as a building material for roads and highways?

    <p>Foundation material</p> Signup and view all the answers

    Which type of soil contains less than 20% organic carbon by weight?

    <p>Mineral soil</p> Signup and view all the answers

    What is one of the major functions of soil mentioned in the text?

    <p>Absorbing domestic and industrial wastes</p> Signup and view all the answers

    How does soil support plant growth according to the text?

    <p>By supplying water, air, and mechanical support to plant roots</p> Signup and view all the answers

    What role does soil play in the production of household structures?

    <p>Supplying construction materials like clay</p> Signup and view all the answers

    How do plant nutrients become available in the soil for plant growth?

    <p>They are released from minerals and organic matter to exchangeable sites</p> Signup and view all the answers

    What dictates the nature of vegetation and types of animals in a particular area?

    <p>Properties of the soil</p> Signup and view all the answers

    Apart from plants, which living organisms help in improving soil structure and fertility?

    <p>Micro-organisms, reptiles, and mammals</p> Signup and view all the answers

    What is the function of soil as a natural resource?

    <p>Medium for plant growth</p> Signup and view all the answers

    Which branch of soil science focuses on the study of soil nutrients and their availability for plant growth?

    <p>Soil Chemistry and Mineralogy</p> Signup and view all the answers

    What does Soil Genesis, Morphology, and Classification primarily deal with?

    <p>Origin and structure of soils</p> Signup and view all the answers

    In what way does soil act as a building material?

    <p>By forming the foundation for buildings</p> Signup and view all the answers

    What aspect of soil does Soil Physics primarily focus on?

    <p>Physical forces acting on the soil</p> Signup and view all the answers

    What is the main purpose of Soil Fertility in soil science?

    <p>Study of nutrient availability for plant growth</p> Signup and view all the answers

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