Soil Health MCQs (Quiz 13)

Soil Health MCQs (Quiz 13)
Multiple Choice Questions for Professional Test Preparation

1. The stage of plant growth that benefits most from vermiculite use is ____________

 Reproductive stage

 Seed germination

 Grain filling

 Ripening stage

2. Gypsum is widely used soil amendment primarily improve ______________

 Soil compaction and drainage

 Soil color

 Soil acidity

 Soil organic matter

3. Organic soil amendments mainly help by ___________

 Lowering water retention

 Increasing salinity levels

 Improving soil organic matter content

 Destroying beneficial organisms

4. High bulk density in soil usually means the soil is ___________

 Completely saturated with water

 More compacted

 Rich in plant diversity

 More acidic

5. Which statement best summarizes the ecological significance of soil?

 Soil serves only as a physical base for buildings and roads

 Soil functions as a dynamic living system that supports biodiversity, nutrient cycling, water regulation, and ecosystem productivity

 Soil ecosystems are independent of biological activity

 Soil has little influence on ecosystem sustainability

6. Excessive nitrogen application in crops often results in __________

 Improved drought tolerance due to deeper roots

 Lush and succulent vegetative growth with increased susceptibility to pests

 Increased soil pH uniformly across all soil types

 Reduced pest attacks from hardened plant tissues

7. Poor soil aeration primarily affects plants by limiting ___________

 Photosynthesis in leaves

 Water absorption by stems

 Seed color development

 Root respiration and nutrient uptake

8. Which of the following is the most direct and common consequence of phosphorus deficiency in plants?

 Fruits become sweeter than normal

 Poor root growth and energy transfer

 Leaves turn dark green or purplish-red

 Changes in stem flexibility

9. Healthy root development depends on proper __________ in the growing medium (e.g., soil)

 Moisture and aeration balance

 Clay contents

 Adequate salt ions

 Metal concentration

10. Vermiculite is most useful for plants that need ______________

 Limited root aeration

 Consistent moisture

 Desert conditions

 Waterlogged soil

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