Soil Health MCQs (Quiz 1)

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

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

 Darwin and Wallace

 Doran and Parkin

 Blackman and Priestley

 Liebig and Mitscherlich

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

 Watering the soil until it is completely soaked every day

 Leaving plant roots and crop leftovers on the field

 Burning all leftover plants after harvest

 Plowing deeply after every harvest

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

 Soil organic matter

 Gravel content

 Sand fraction

 Lime content

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

 Filtering and buffering potential pollutants

 Sustaining biological activity and diversity

 Producing non-renewable fossil fuels

 Regulating and partitioning water flow

5. 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

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

 Bulk density

 Soil microbial biomass and activity

 Soil organic carbon content

 Cation exchange capacity

7. Earthworms are important in soil because they improve _______

 Surface sealing

 Toxic metal accumulation

 Soil structure and aeration

 Salinity levels

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

 Electrical conductivity

 Soil structure and aggregation

 Soil texture alone

 Soil pH

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

 Salinity

 Alkalinity

 Podzolization

 Laterization

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

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

 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

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