MCQs Agronomy-47 Posted on December 7, 2024August 30, 2025Author agropublishers 0 1. ——- ———— ——–constitute over 90% of a plant’s dry weight Nitrogen, sulfur, calcium Carbon, hydrogen, oxygen Magnesium, phosphorus, potassium Nitrogen, phosphorus, potassium 2. How does microclimate differ from macroclimate? Microclimate is the climate of a large region, while macroclimate is the climate of a small area Microclimate is the climate of a small area, while macroclimate is the climate of a large region Microclimate is the climate of a mountain, while macroclimate is the climate of a valley Microclimate is the climate of a city, while macroclimate is the climate of a rural area 3. Base temperature for rice growth is ———— °C 12 °C 5 °C 7 °C 10 °C 4. Measurement of ——- is the primary function of a tensiometer Rainfall intensity Atmospheric pressure Soil moisture levels Soil temperature 5. A hygrometer is primarily used to measure ——– Relative humidity Wind speed Atmospheric pressure Atmospheric temperature 6. Which of the following best describes effective rainfall? Rainfall that evaporates before reaching the ground and does not contribute to soil moisture Total rainfall in an area Rainfall that exceeds the infiltration capacity of the soil and runs off Rainfall that is absorbed by the soil and contributes to plant growth 7. ——— can significantly increase the Cation Exchange Capacity of soil Minor change in soil pH Excessive tillage operation Addition of organic matter Addition of sand 8. ———— of the following is NOT a factor that primarily influences CEC Soil pH Soil texture Soil organic matter content Soil temperature 9. Field Capacity is the ———– Total amount of water in the soil before saturation Minimum water content needed for plant survival Amount of water lost through evaporation Maximum amount of water a soil can hold after saturation and drainage 10. The primary mechanism by which soil particles attract cations is ———– Van der Waals forces Hydrogen bonding Covalent bonding Electrostatic force Loading …
