Class 9 Practice Level 3 - Improvement in Food Resources - Set 1

Total questions: 15

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

None

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

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

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

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

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

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

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

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

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Class 9 Practice Level 3 - Improvement in Food Resources - Set 1

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