Soil Health MCQs (Quiz 1)

Soil Health MCQs (Quiz 1)
Multiple Choice Questions for Professional Test Preparation

1. What is a primary physical determinant of soil health that directly affects root growth and water movement?

 Soil texture alone

 Soil structure and aggregation

 Soil pH

 Electrical conductivity

2. The excessive accumulation of soluble salts in soil is known as _______

 Podzolization

 Salinity

 Laterization

 Alkalinity

3. Which of the following best distinguishes soil health from soil quality?

 Soil health emphasizes dynamic, living components; soil quality often focuses on inherent and measurable attributes

 Soil quality excludes chemical properties; soil health includes them

 Soil health is a static property; soil quality changes seasonally

 There is no difference; the terms are identical in all literature

4. A farmer wants to improve soil structure over many years. Which practice should a farmer use?

 Burning all leftover plants after harvest

 Plowing deeply after every harvest

 Leaving plant roots and crop leftovers on the field

 Watering the soil until it is completely soaked every day

5. Which indicator most directly reflects the biological component of soil health?

 Cation exchange capacity

 Bulk density

 Soil organic carbon content

 Soil microbial biomass and activity

6. Which scientist and colleagues are known for developing the “Soil Management Assessment Framework” (SMAF) to quantify soil health?

 Douglas Karlen

 Charles Darwin

 Justus von Liebig

 John McCarthy

7. Among the soil components ____________ is considered as the foundation of soil health due to its influence on physical, chemical, and biological properties?

 Sand fraction

 Gravel content

 Soil organic matter

 Lime content

8. Which of the following is NOT generally considered a primary function of healthy soil?

 Filtering and buffering potential pollutants

 Producing non-renewable fossil fuels

 Sustaining biological activity and diversity

 Regulating and partitioning water flow

9. Who defined soil health as “the capacity of a soil to sustain biological productivity, maintain environmental quality, and promote plant health”?

 Blackman and Priestley

 Darwin and Wallace

 Doran and Parkin

 Liebig and Mitscherlich

10. Earthworms are important in soil because they improve _______

 Salinity levels

 Toxic metal accumulation

 Surface sealing

 Soil structure and aeration

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Question 1 of 10

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