Soil Health MCQs (Quiz 20)

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

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

 Soil becomes completely sterile

 Soil turns into clay

 Plants stop photosynthesis

 Soil may retain excessive moisture

2. Crops lacking sufficient potassium are generally __________

 Better able to tolerate drought conditions

 Prone to accelerated maturation and early senescence

 More resistant to fungal and bacterial diseases

 More susceptible to environmental stress and lodging

3. Fungal hyphae improve soil structure mainly by __________

 Reducing water infiltration

 Preventing root growth

 Increasing soil compaction

 Binding soil particles into stable aggregates

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

 Parasitic

 Predatory

 Symbiotic

 Competitive

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

 Energy transfer and root growth

 Chlorophyll destruction

 Protein breakdown

 Water loss through leaves

6. Compost is primarily produced through the breakdown of ___________

 Glass materials

 Plant and animal residues

 Synthetic fertilizers

 Metal scraps

7. Soil lacking sufficient organic matter often experiences reduced __________

 Water evaporation

 Mineral content

 Sand percentage

 Microbial diversity and soil health

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

 Water infiltration

 Natural recovery

 Environmental disturbances and stress

 Organic matter formation

9. Intensive tillage can negatively affect mycorrhizal fungi by __________

 Breaking apart underground hyphal connections

 Eliminating all soil moisture

 Enhancing fungal network stability

 Increasing nutrient exchange efficiency

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

 Increases natural nutrient recycling

 Stops all nutrient movement in the soil

 Enhances soil aggregation and porosity

 Removes essential nutrients from the root zone via leaching or runoff

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