Soil Health MCQs (Quiz 20)

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

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

 Predatory

 Symbiotic

 Competitive

 Parasitic

2. Soil lacking sufficient organic matter often experiences reduced __________

 Sand percentage

 Water evaporation

 Microbial diversity and soil health

 Mineral content

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

 Organic matter formation

 Environmental disturbances and stress

 Natural recovery

 Water infiltration

4. Intensive tillage can negatively affect mycorrhizal fungi by __________

 Eliminating all soil moisture

 Enhancing fungal network stability

 Breaking apart underground hyphal connections

 Increasing nutrient exchange efficiency

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

 Chlorophyll destruction

 Water loss through leaves

 Energy transfer and root growth

 Protein breakdown

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

 Plants stop photosynthesis

 Soil turns into clay

 Soil becomes completely sterile

 Soil may retain excessive moisture

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

 Enhances soil aggregation and porosity

 Stops all nutrient movement in the soil

 Removes essential nutrients from the root zone via leaching or runoff

 Increases natural nutrient recycling

8. Crops lacking sufficient potassium are generally __________

 More susceptible to environmental stress and lodging

 Prone to accelerated maturation and early senescence

 More resistant to fungal and bacterial diseases

 Better able to tolerate drought conditions

9. Fungal hyphae improve soil structure mainly by __________

 Reducing water infiltration

 Increasing soil compaction

 Binding soil particles into stable aggregates

 Preventing root growth

10. Compost is primarily produced through the breakdown of ___________

 Synthetic fertilizers

 Metal scraps

 Glass materials

 Plant and animal residues

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