Class 9 Practice Level 3 – Improvement in Food Resources – Set 2 Leave a Comment / By Gulam Hamza / July 15, 2024 Class 9 Practice Level 3 - Improvement in Food Resources - Set 2 Total questions: 15 1. A farmer plans a three-year crop rotation involving wheat, legumes, and barley. If the nitrogen depletion rates are 50 units/year for wheat, 20 units/year for legumes, and 40 units/year for barley, what is the total nitrogen depletion after one complete rotation? Topic: Crop Rotation 90 units 100 units 110 units 120 units None 2. A dairy cow consumes 20 kg of feed daily. If the feed contains 15% protein, how much protein does the cow consume per day? Topic: Animal Husbandry 2 kg 3 kg 4 kg 5 kg None 3. If a sprinkler system delivers water at a rate of 8 litres per minute and runs for 5 hours a day, how many litres of water does it deliver in a week? Topic: Irrigation Efficiency 12000 litres 14000 litres 16800 litres 18000 litres None 4. A field requires 100 kg of potassium per hectare. If a potassium fertilizer contains 50% potassium, how many kilograms of the fertilizer are needed per hectare? Topic: Soil Management 100 kg 150 kg 200 kg 250 kg None 5. If a field of 5 hectares produces 7500 kg of maize, what is the average yield per hectare? Topic: Crop Production 1200 kg/ha 1300 kg/ha 1400 kg/ha 1500 kg/ha None 6. In a genetic modification experiment, a scientist treats 200 plants, and 30 of them show successful gene expression. What is the success rate of the gene expression? Topic: Genetic Engineering 10% 15% 20% 25% None 7. A farmer grows three crops in rotation: soybeans, corn, and wheat. If soybeans add 40 units of nitrogen to the soil, corn depletes 30 units, and wheat depletes 50 units, what is the net nitrogen balance after one complete rotation? Topic: Crop Rotation -40 units -20 units 0 units +20 units None 8. A farmer has 100 goats, each consuming 4 kg of fodder daily. If the fodder costs ₹10 per kg, what is the total cost of fodder for 30 days? Topic: Livestock Management ₹100,000 ₹110,000 ₹120,000 ₹130,000 None 9. A fertilizer recommendation is to apply 60 kg of nitrogen per hectare. If a farmer has a 15-hectare field, how much nitrogen is required for the entire field? Topic: Fertilizer Application 600 kg 800 kg 900 kg 1000 kg None 10. A crop requires 700 mm of water during its growing season. If irrigation provides water at a rate of 5 mm per hour, how many hours of irrigation are needed to meet the crop's water requirement? Topic: Water Management 120 hours 130 hours 140 hours 150 hours None 11. A farmer harvested 2000 kg of tomatoes from a 4-hectare field. Calculate the average yield per hectare Topic: Crop Yield Calculation 400 kg/ha 450 kg/ha 500 kg/ha 550 kg/ha None 12. If a drip irrigation system delivers 6 litres of water per hour per emitter and a field has 250 emitters, how much water is delivered in 8 hours? Topic: Irrigation Efficiency 10000 litres 11000 litres 12000 litres 13000 litres None 13. A field requires 90 kg of phosphorus per hectare. If a fertilizer contains 25% phosphorus, how many kilograms of fertilizer are needed per hectare? Topic: Nutrient Management 320 kg 340 kg 360 kg 380 kg None 14. A scientist inserts a gene into 50 plants, and 10 plants show successful expression. What is the success rate of the gene insertion? Topic: Genetic Engineering 15% 18% 20% 25% None 15. If a farmer wants to increase the yield of a crop from 1500 kg/ha to 2000 kg/ha on a 5-hectare field, how much additional yield is needed? Topic: Crop Production 2000 kg 2500 kg 3000 kg 3500 kg None 1 out of 15 Time's up
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