Soil Health MCQs (Quiz 1)

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

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

 Alkalinity

 Salinity

 Podzolization

 Laterization

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

 Bulk density

 Soil microbial biomass and activity

 Cation exchange capacity

 Soil organic carbon content

3. Earthworms are important in soil because they improve _______

 Surface sealing

 Salinity levels

 Soil structure and aeration

 Toxic metal accumulation

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

 Justus von Liebig

 John McCarthy

 Douglas Karlen

 Charles Darwin

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

 Lime content

 Sand fraction

 Soil organic matter

 Gravel content

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

 Soil structure and aggregation

 Soil pH

 Soil texture alone

 Electrical conductivity

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

 Leaving plant roots and crop leftovers on the field

 Plowing deeply after every harvest

 Burning all leftover plants after harvest

 Watering the soil until it is completely soaked every day

8. 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

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

 Soil health is a static property; soil quality changes seasonally

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

 Soil quality excludes chemical properties; soil health includes them

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

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

 Sustaining biological activity and diversity

 Filtering and buffering potential pollutants

 Producing non-renewable fossil fuels

 Regulating and partitioning water flow

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