Soil Health MCQs (Quiz 16)

Soil Health MCQs (Quiz 16)
Multiple Choice Questions for Professional Test Preparation

1. Which characteristic of perlite benefits plant roots the most?

 Sticky texture

 Dark color

 High density

 Lightweight porous structure

2. What is one key way that mycorrhizal networks support plant resilience during drought?

 By transporting additional water and associated nutrients through fungal hyphae

 By shutting down all nutrient exchange to conserve energy

 By causing leaves to fall off immediately at the start of drought

 By temporarily replacing photosynthesis with fungal metabolism

3. What is the major advantage of vermiculite?

 Removes nutrients

 Increases soil acidity

 Improves water retention

 Prevents root growth

4. Which nutrient is most often temporarily immobilized during decomposition of high-carbon residues?

 Nitrogen

 Potassium

 Sulfur

 Calcium

5. Overapplication of nitrogen fertilizers commonly promotes excessive __________.

 Leafy vegetative growth

 Root dormancy

 Flower drop

 Seed hardening

6. An increase in soil bulk density can negatively affect plant growth by _______________

 Increasing microbial diversity in all cases

 Restricting root penetration and reducing aeration

 Eliminating soil minerals completely

 Improving water infiltration excessively

7. Which farming practice is most likely to degrade soil health over time?

 Excessive tillage

 Cover cropping

 Crop rotation

 Compost application

8. Which of the following is a primary purpose of adding soil amendments?

 Enhance soil structure and nutrient availability

 Increase soil compaction

 Reduce microbial activity

 Decrease soil fertility

9. The main benefit of compost application in soil is to ___________

 Harden the soil surface

 Increase soil pollution

 Reduce microbial activity

 Improve soil fertility and structure

10. Farmers commonly apply sulfur to soil in order to __________

 Make the soil more acidic

 Increase alkalinity

 Improve compaction

 Reduce organic matter

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