Questions and Answers
What is a common characteristic used for the classification of soil profiles?
Thickness of horizons
In soil science, what is a hierarchical classification?
A classification where classes form other objects that can be classified further
What is a major distinction between natural and technical approaches in soil classifications?
Natural approaches group soils based on intrinsic properties, technical approaches do not
What is a characteristic that is NOT used for classifying soil profiles according to the text?
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Which of the following is true about the classification of soil series into reference soil groups?
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Why are accessory or covarying characteristics important in the classification of objects?
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What are the four basic components that make up soil composition?
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What is one example of natural classification mentioned in the text?
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Which factor is NOT considered one of the five soil forming factors mentioned in the text?
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Which principle involves organizing soil knowledge based on specific objectives?
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What percentage of the ideal soil is typically composed of minerals?
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Where is the organic matter content usually much lower than 5% according to the text?
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What is the main focus of technical soil classifications?
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Which classification system groups soils based on their development pathway?
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Which of the following factors can alter the volume of the pore space in soil?
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What component of soil composition is found in the pore spaces between solid soil particles?
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What is the main focus of the Principle of Certainty?
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Which classification system is specifically mentioned in the text as related to suitability classes?
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What is the characteristic composition of silicate minerals in soils?
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What happens to the charge on particles under moderately acid conditions?
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How does the pH affect the charge on colloidal particles?
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What is the most common element found in the Earth's crust after oxygen?
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Which process involves the attachment of H+ ions to surface OH groups under more acidic soil conditions?
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What type of bonding holds Si and Al atoms together with O2 atoms in clays?
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What is the role of fungi in the soil ecosystem?
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Which of the following microfungi are mentioned as helpful in the preservation of organic materials in the soil?
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What is the characteristic smell associated with actinomycetes in a freshly ploughed field?
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Which microorganism is particularly abundant in soils rich in decomposed organic materials?
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How do algae contribute to soil conservation?
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Which of the following microfungi thrive by having a mutual relationship with plants?
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