Class 9 Practice Level 3 – Improvement in Food Resources – Set 1 Leave a Comment / By Gulam Hamza / July 13, 2024 Class 9 Practice Level 3 - Improvement in Food Resources - Set 1 Total questions: 15 1. A farmer wants to introduce a gene for drought resistance into a crop plant using genetic engineering. If the gene insertion has a success rate of 20%, how many plants should the farmer treat to expect at least 5 successful gene insertions Topic: Genetic Engineering 20 25 30 35 None 2. If a soil sample has a pH of 4.5 and a farmer wants to raise it to 6.5 using lime (calcium carbonate), how many kilograms of lime are needed per hectare if 1 ton of lime raises the pH by 0.5 units in a hectare? Topic: Soil Fertility 2 tons 3 tons 4 tons 5 tons None 3. A farmer practices a four-year crop rotation of wheat, legumes, corn, and potatoes. If each crop depletes nitrogen from the soil by 40 units, 10 units, 30 units, and 50 units respectively, how many units of nitrogen will be depleted after one complete rotation? Topic: Crop Rotation 100 units 110 units 120 units 130 units None 4. If a fish tank has a volume of 1000 litres and the optimal fish density is 2 fish per litre, how many fish can the tank hold? Topic: Aquaculture 500 1000 1500 2000 None 5. A farmer harvested 3000 kg of wheat from a 2-hectare field. What is the yield per hectare? Topic: Crop Yield Calculation 1000 kg/ha 1500 kg/ha 2000 kg/ha 2500 kg/ha None 6. If a drip irrigation system delivers 5 litres of water per hour per emitter and a field has 200 emitters, how much water is delivered in 10 hours? Topic: Irrigation Efficiency 5000 litres 10000 litres 15000 litres 20000 litres None 7. A dairy farm has 150 cows, and each cow produces an average of 20 litres of milk per day. How much milk does the farm produce in a week? Topic: Livestock Management 21000 litres 22000 litres 23000 litres 24000 litres None 8. A field requires 120 kg of nitrogen per hectare. If a fertilizer contains 30% nitrogen, how many kilograms of fertilizer are needed per hectare? Topic: Nutrient Management 300 kg 400 kg 500 kg 600 kg None 9. If a farmer uses 5 litres of pesticide solution per hectare and has a 50-hectare farm, how much pesticide solution is required for the entire farm? Topic: Crop Protection 200 litres 225 litres 250 litres 275 litres None 10. In a genetic engineering experiment, a scientist successfully transformed 8 out of 40 plant cells. What is the success rate of the transformation process? Topic: Genetic Engineering 15% 20% 25% 30% None 11. A farmer needs to apply 2 tons of manure per hectare on a 25-hectare field. If each truck can carry 5 tons of manure, how many truckloads are needed? Topic: Manure Application 8 truckloads 10 truckloads 12 truckloads 14 truckloads None 12. If the planting density of a crop is 5 plants per square meter and a farmer has a field of 10,000 square meters, how many plants can be planted in the field? Topic: Crop Production 40000 plants 45000 plants 50000 plants 55000 plants None 13. A crop requires 600 mm of water during its growing season. If a farmer uses a sprinkler system that delivers 10 mm of water per hour, how many hours of irrigation are required to meet the crop's water requirement? Topic: Irrigation Requirement 50 hours 60 hours 70 hours 80 hours None 14. A fertilizer mix has an N-P-K ratio of 10-20-10. If a field needs 40 kg of phosphorus per hectare, how much of the fertilizer mix should be applied per hectare? Topic: Fertilizer Application 150 kg 200 kg 250 kg 300 kg None 15. A farmer harvested 1500 kg of rice from a 3-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 1 out of 15 Time's up
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