Soil Health MCQs (Quiz 2)

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

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

 Soil aggregation

 Soil pH

 Soil color

 Crop height

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

 Nitrous oxide (N₂O)

 Carbon dioxide (CO₂)

 Methane (CH₄)

 Sulfur hexafluoride (SF₆)

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

 Over-irrigation to keep soil saturated

 Maintaining continuous plant cover and residues

 Regular burning of crop residues

 Frequent deep tillage to break up clods

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

 Counting earthworms in a shovel-full of soil

 Sending soil to a lab for nutrient testing

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

 Measuring how warm the soil feels to the touch

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

 Continuous monoculture

 Minimum tillage

 Deep plowing

 Residue burning

6. Regenerative agriculture mainly focuses on __________

 Monocropping systems

 Maximizing irrigation

 Increasing pesticide use

 Soil restoration and ecosystem improvement

7. 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

8. Which farming practice helps improve soil biodiversity?

 Cover cropping

 Burning crop residues

 Continuous monoculture

 Excessive tillage

9. 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

 High soil aggregation

 High sand content

 Surface crusting or compaction

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

 It directly supplies all nutrients in sufficient quantities

 It eliminates the need for soil organisms

 It improves structure, water retention, and nutrient cycling

 It increases soil color uniformity

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