Management in Food Production MCQs Quiz | Class 9
Test your knowledge of Class IX Science (Code 086) Unit IV: Food Production. This quiz covers basic management practices, sustainable agriculture, nutrient management, and cropping patterns essential for improving crop yields. Click “Submit Quiz” to check your score and download the PDF answer key.
Overview: Management in Food Production
Food production management in Class 9 Science (Unit IV) focuses on sustainable practices to meet the growing demand for food. This involves improving crop varieties, managing nutrients efficiently, utilizing proper irrigation techniques, and adopting advanced cropping patterns.
Key Concepts
- Nutrient Management: Plants require 16 essential nutrients. Carbon and oxygen come from air, hydrogen from water, and the remaining 13 from soil. These are classified into macronutrients (required in large quantities) and micronutrients (required in small quantities).
- Manure and Fertilizers: Manure helps enrich soil with organic matter and nutrients, improving soil structure. Fertilizers are commercially produced plant nutrients (N, P, K) that ensure healthy vegetative growth but must be used judiciously to prevent water pollution and soil degradation.
- Irrigation: Ensures water supply to crops at the right stages. Sources include wells (dug and tube wells), canals, river lift systems, and tanks.
- Cropping Patterns:
- Mixed Cropping: Growing two or more crops simultaneously on the same land (e.g., wheat + gram).
- Intercropping: Growing two or more crops simultaneously in a definite row pattern (e.g., soybean + maize).
- Crop Rotation: Growing different crops on a piece of land in a pre-planned succession.
Nutrient Classification Table
| Type | Examples | Function |
|---|---|---|
| Macronutrients | Nitrogen, Phosphorus, Potassium, Calcium, Magnesium, Sulphur | Required in large amounts for building plant body structure and protoplasm. |
| Micronutrients | Iron, Manganese, Boron, Zinc, Copper, Molybdenum, Chlorine | Required in trace amounts for enzyme activity and regulation. |
Crop Variety Improvement
Improvement is achieved through hybridization (crossing genetically dissimilar plants) or by introducing a gene that provides desired characteristics. The goals are higher yield, improved quality, biotic and abiotic resistance, change in maturity duration, and wider adaptability.
Extra Practice Questions
- What is the difference between compost and vermicompost?
- Why is crop rotation considered beneficial for soil fertility?
- Explain the term “Green Manure”.
- How does intercropping prevent the spread of diseases?
- List two advantages of using organic manure over chemical fertilizers.
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