Soil Health MCQs (Quiz 9)

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

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

 Enhances nutrient cycling and plant–microbe interactions

 Eliminates the need for soil nutrients

 Reduces root growth intentionally

 Prevents all microbial activity in soil

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

 Improve soil aeration and mixing

 Increase soil compaction

 Inhibits harmful bacteria

 Produce chemical nutrients

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

 It only works in laboratory conditions

 It measures soil texture through sound waves

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

 It completely replaces soil microorganisms in analysis

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

 Immediate formation of new minerals

 Permanent soil sterilization

 Elimination of all soil organic matter

 Changes in microbial diversity and nutrient availability

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

 It prevents nutrient uptake by roots

 It only affects soil color changes

 It supports crop growth and improves drought resilience

 It increases soil erosion

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

 Salt accumulation

 Soil water retention and aeration

 Loss of microbial activity

 Soil compaction

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

 Loss of soil texture

 Increased soil compaction

 Decrease in oxygen availability

 Enhanced microbial activity due to fresh carbon inputs

8. Sustainable soil management helps agriculture by _______________

 Maintaining long-term soil fertility and ecosystem stability

 Promoting water loss from farmland

 Eliminating all microorganisms in soil

 Increasing soil erosion

9. 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

 Farm X

 Farm Y

 Neither

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

 It determines soil color

 It influences soil carbon storage and greenhouse gas emissions

 It eliminates decomposition processes completely

 It regulates only inorganic minerals in soil

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