Soil Health MCQs (Quiz 20)

Soil Health MCQs (Quiz 20)
Multiple Choice Questions for Professional Test Preparation

1. Soil lacking sufficient organic matter often experiences reduced __________

 Mineral content

 Water evaporation

 Microbial diversity and soil health

 Sand percentage

2. The relationship between tree roots and mycorrhizal fungi is best described as ________________________

 Parasitic

 Competitive

 Predatory

 Symbiotic

3. Which plant process is most strongly supported by phosphorus?

 Chlorophyll destruction

 Energy transfer and root growth

 Protein breakdown

 Water loss through leaves

4. What happens if too much vermiculite is added to soil?

 Plants stop photosynthesis

 Soil turns into clay

 Soil may retain excessive moisture

 Soil becomes completely sterile

5. Soils with greater microbial diversity are often more resistant to __________

 Environmental disturbances and stress

 Natural recovery

 Water infiltration

 Organic matter formation

6. Compost is primarily produced through the breakdown of ___________

 Glass materials

 Metal scraps

 Plant and animal residues

 Synthetic fertilizers

7. Crops lacking sufficient potassium are generally __________

 More resistant to fungal and bacterial diseases

 Better able to tolerate drought conditions

 More susceptible to environmental stress and lodging

 Prone to accelerated maturation and early senescence

8. Poor irrigation management can reduce soil fertility mainly because it __________

 Enhances soil aggregation and porosity

 Removes essential nutrients from the root zone via leaching or runoff

 Stops all nutrient movement in the soil

 Increases natural nutrient recycling

9. Intensive tillage can negatively affect mycorrhizal fungi by __________

 Breaking apart underground hyphal connections

 Increasing nutrient exchange efficiency

 Enhancing fungal network stability

 Eliminating all soil moisture

10. Fungal hyphae improve soil structure mainly by __________

 Reducing water infiltration

 Binding soil particles into stable aggregates

 Preventing root growth

 Increasing soil compaction

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