Soil Health MCQs (Quiz 2)

Soil Health MCQs (Quiz 2)
Multiple Choice Questions for Professional Test Preparation

1. Famous 19th-century naturalist _________________ highlighted the ecological role of earthworms in soil formation and fertility, indirectly contributing to the concept of soil health

 Gregor Mendel

 Alfred Russel Wallace

 Charles Darwin

 Louis Pasteur

2. A farmer wants to check soil compaction of his agricultural land. Which is the quickest physical method to use right in the field?

 Pushing a metal rod or penetrometer into the soil to assess resistance

 Counting earthworms in a shovel-full of soil

 Sending soil to a lab for nutrient testing

 Measuring how warm the soil feels to the touch

3. Which management practice most consistently improves soil structure and long-term soil health?

 Regular burning of crop residues

 Maintaining continuous plant cover and residues

 Frequent deep tillage to break up clods

 Over-irrigation to keep soil saturated

4. Which soil property is most closely related to water infiltration?

 Crop height

 Soil aggregation

 Soil color

 Soil pH

5. Which farming practice helps improve soil biodiversity?

 Continuous monoculture

 Cover cropping

 Burning crop residues

 Excessive tillage

6. Which greenhouse gas is primarily removed from the atmosphere and stored in healthy soils through the buildup of organic matter?

 Nitrous oxide (N₂O)

 Methane (CH₄)

 Sulfur hexafluoride (SF₆)

 Carbon dioxide (CO₂)

7. Regenerative agriculture mainly focuses on __________

 Soil restoration and ecosystem improvement

 Maximizing irrigation

 Increasing pesticide use

 Monocropping systems

8. A farmer observes standing water on a field two hours after a moderate rainfall. Which soil condition is the most likely primary cause?

 Active earthworm populations

 Surface crusting or compaction

 High sand content

 High soil aggregation

9. Among the soil management practices _____________ is the most effective for conserving soil organic matter

 Residue burning

 Minimum tillage

 Continuous monoculture

 Deep plowing

10. How does soil organic matter most strongly contribute to soil health?

 It increases soil color uniformity

 It eliminates the need for soil organisms

 It directly supplies all nutrients in sufficient quantities

 It improves structure, water retention, and nutrient cycling

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