Soil Health MCQs (Quiz 9)

Soil Health MCQs (Quiz 9)
Multiple Choice Questions for Professional Test Preparation

1. Sustainable soil management helps agriculture by _______________

 Promoting water loss from farmland

 Increasing soil erosion

 Maintaining long-term soil fertility and ecosystem stability

 Eliminating all microorganisms in soil

2. The rhizosphere plays a major role in sustainable agriculture because it ___________________

 Reduces root growth intentionally

 Eliminates the need for soil nutrients

 Prevents all microbial activity in soil

 Enhances nutrient cycling and plant–microbe interactions

3. A study compares two farms. Farm X has high aggregate stability, high mycorrhizal colonization, and low nitrate leaching. Farm Y has the opposite. Which farm is likely practicing regenerative agriculture?

 Both Farms X and Y

 Neither

 Farm Y

 Farm X

4. Why is microbial carbon use efficiency important in soil carbon cycling studies?

 It determines soil color

 It eliminates decomposition processes completely

 It influences soil carbon storage and greenhouse gas emissions

 It regulates only inorganic minerals in soil

5. Earthworms are considered “natural ploughs” because they ______________

 Increase soil compaction

 Improve soil aeration and mixing

 Produce chemical nutrients

 Inhibits harmful bacteria

6. Why is hyperspectral imaging considered valuable for large-scale soil health monitoring?

 It completely replaces soil microorganisms in analysis

 It measures soil texture through sound waves

 It provides rapid, non-destructive, and spatially extensive soil analysis

 It only works in laboratory conditions

7. Which soil property is commonly enhanced by biochar application?

 Salt accumulation

 Soil water retention and aeration

 Soil compaction

 Loss of microbial activity

8. Which factor most directly contributes to the priming effect in soils?

 Loss of soil texture

 Increased soil compaction

 Enhanced microbial activity due to fresh carbon inputs

 Decrease in oxygen availability

9. Why is plant-available water important in sustainable agriculture?

 It increases soil erosion

 It only affects soil color changes

 It prevents nutrient uptake by roots

 It supports crop growth and improves drought resilience

10. A major shift in soil pH can lead to ______________

 Changes in microbial diversity and nutrient availability

 Permanent soil sterilization

 Immediate formation of new minerals

 Elimination of all soil organic matter

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