Class 8 Science: Crop Production and Management

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Questions and Answers

Which of the following is a type of crop rotation?

Growing the same crop on different lands
Growing different crops on different lands
Growing the same crop on the same land every season
Growing different crops on the same land in the same season (correct)

Which of the following is a benefit of mixed cropping?

Increased pest and disease resistance (correct)
Increased crop yield
Reduced soil fertility
Reduced water requirement

What is the main purpose of ploughing in crop production?

To level the soil
To add manure to the soil
To loosen the soil and remove weeds (correct)
To mix the soil with fertilizers

What is the purpose of irrigation in crop production?

To supply water to the crops during periods of drought (C) Signup and view all the answers

What is the purpose of threshing in crop production?

To separate the grain from the chaff (B) Signup and view all the answers

What is the primary advantage of using a seed drill in crop production?

Even distribution of seeds (D) Signup and view all the answers

Why is bunding used in crop production?

To prevent soil erosion (B) Signup and view all the answers

What is the main advantage of using manures in crop production?

Improves soil fertility (A) Signup and view all the answers

What is the purpose of winnowing in crop production?

Separating grains from chaff (C) Signup and view all the answers

Why is crop rotation important in crop production?

To maintain soil fertility (B) Signup and view all the answers

Study Notes

Soil Preparation

Ploughing is done to loosen and turn over the soil, preparing it for seeding and promoting healthy plant growth.

Crop Rotation

Crop rotation is a practice that involves growing different crops in the same field in a specific order to improve soil fertility and structure.

Water Management

Irrigation is used in crop production to supply crops with adequate water, especially during periods of drought or when rainfall is insufficient.

Mixed Cropping

Mixed cropping is a type of crop rotation that involves growing two or more crops together in the same field, and one of its benefits is that it promotes biodiversity and reduces pest and disease pressure.

Post-Harvest Handling

Threshing is a process in crop production that involves separating grains from the rest of the plant, such as chaff and straw, to prepare them for storage or further processing.

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Description

Test your knowledge of crop production and management techniques, including ploughing, crop rotation, irrigation, and more. Perfect for 8th grade students studying science.