Crop Production and Management Quiz - CBSE Class 8 Science

Free practice quiz: Crop Production and Management (CBSE Class 8 Science). 20 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. Which of the following is NOT a method of crop production?

   1. Using high-yield variety seeds
   2. Using fertilizers
   3. Using pesticides
   4. Using nuclear radiation
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   Answer: D. Using nuclear radiation

   Nuclear radiation is not a method used in crop production. The other options are common agricultural practices.

2. Describe the process of harvesting and threshing.

   1. Harvesting is the process of cutting the crop; threshing is the separation of grains from the stalks
   2. Harvesting is the sowing of seeds; threshing is weeding the field
   3. Harvesting is the preparation of the field; threshing is the irrigation of the crops
   4. Harvesting is the collection of harvested crops; threshing is storing the grains
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   Answer: A. Harvesting is the process of cutting the crop; threshing is the separation of grains from the stalks

   Harvesting involves cutting or picking the mature crop, while threshing separates the grains from the stalks using methods like beating or machine processing.

3. How do different types of soil affect the choice of crops?

   1. Different crops have varying needs for soil texture, pH, and nutrient content
   2. Sandy soils are suitable for crops that require good drainage
   3. Clayey soils are more suitable for crops that require better water retention
   4. All of the above
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   Answer: D. All of the above

   Soil type influences crop selection as different crops have specific soil requirements regarding texture, pH, drainage, and nutrient content.

4. Explain the concept of integrated pest management (IPM) and its advantages over traditional pest control methods.

   1. IPM utilizes a combination of biological, chemical, and cultural methods to manage pests
   2. IPM aims to minimize the use of harmful pesticides, reducing environmental impact
   3. IPM is a more sustainable and environmentally friendly approach to pest control
   4. All of the above
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   Answer: D. All of the above

   Integrated Pest Management (IPM) is a holistic approach that combines various methods to control pests while minimizing environmental damage.

5. Critically evaluate the sustainability of current agricultural practices and propose strategies for achieving a more sustainable agricultural system.

   1. Sustainable agriculture aims to balance economic viability, environmental protection, and social equity
   2. Strategies for sustainable agriculture include reducing reliance on synthetic inputs, improving water management, and promoting biodiversity
   3. A holistic approach considering the interconnectedness of environmental, social, and economic factors is essential for achieving sustainability
   4. All of the above
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   Answer: D. All of the above

   Sustainable agriculture requires a comprehensive approach that considers environmental, social, and economic dimensions to ensure long-term food security.

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