MCQs Soil Science-54 Posted on August 23, 2025August 30, 2025Author agropublishers 0 1. _______ is the soil area surrounding plant roots where biological and chemical interactions occur Rhizosphere Hydrosphere Aerosphere Biosphere 2. Deep-rooted crops can help to_________ Increase soil salinity Reduce soil nutrient availability Bring up nutrients from deeper soil layers Decrease soil water infiltration 3. Deficiency of __________ is closely associated with chlorosis (yellowing of leaves) in plants Phosphorus Boron Magnesium Potassium 4. Which of the following is a management practice specifically designed to protect the soil surface from the physical impact of raindrops, wind, and machinery? The Ozone Layer A Mulch Layer The Humus Layer 5. What does REDD+ stand for? Renewable Energy Development Department Reducing Emissions from Deforestation and Forest Degradation Reducing Emissions from Developed Countries Renewable Energy and Development Division 6. _____________is the most frequently used carrier for the rhizobial inoculants. Peat Water Compost Soil 7. In organic farming, a complete and effective crop rotation plan is specifically designed to include __________ Deep-rooted crops Leguminous crops All of these Shallow-rooted crops 8. The primary purpose of crop rotation is to maintain _________ Erosion Soil health Crop production Water conservation 9. Which of the given options plays a crucial role in forming stable soil aggregates, thereby enhancing soil structure and reducing erosion? All of these Soil microorganisms Earthworms Plant roots 10. __________ nutrient is critical for the synthesis of ATP Potassium Nitrogen Phosphorus Calcium Loading … Question 1 of 10
