Are you looking for complete Improvement in Food Resources Class 9 questions and answers? You’re in the right place! This chapter, part of your Class 9 Science NCERT textbook, explains how to enhance food production through better farming techniques, crop management, and animal husbandry.
Understanding Improvement in Food Resources Class 9 is essential because it not only helps you score better in exams but also builds a strong foundation in agricultural science and sustainability practices.
In this post, we cover all important questions and answers from Improvement in Food Resources Class 9, including extra practice questions.
Exercise Questions and Answers (Improvement in Food Resources Class 9)
1. Explain any one method of crop production which ensures high yield.
Answer:
One method to ensure high yield is crop variety improvement. It involves developing crop varieties with better traits like high yield, disease resistance, and adaptability to different climates. This is achieved through hybridisation or genetic changes.
2. Why are manure and fertilizers used in fields?
Answer:
Manure and fertilizers supply essential nutrients to plants. Manure adds organic matter and improves soil health, while fertilizers provide nutrients like nitrogen, phosphorus, and potassium needed for better plant growth and higher yield.
3. What are the advantages of inter-cropping and crop rotation?
Answer:
- Inter-cropping uses land efficiently and reduces pest attacks by growing two crops together.
- Crop rotation maintains soil fertility and controls pests and diseases, leading to better harvests.
4. What is genetic manipulation? How is it useful in agricultural practices?
Answer:
Genetic manipulation is changing the genes of plants to improve their characteristics. It helps in developing crops that are higher yielding, pest-resistant, and more adaptable to harsh environments.
5. How do storage grain losses occur?
Answer:
Grain losses happen because of biotic factors like insects, rodents, fungi, and abiotic factors like excess moisture and temperature. These reduce the quality, weight, and market value of grains.
6. How do good animal husbandry practices benefit farmers?
Answer:
Good practices such as proper feeding, shelter, and vaccinations lead to healthier animals. This increases milk, egg, and meat production and improves the income of farmers.
7. What are the benefits of cattle farming?
Answer:
Cattle farming provides milk (from milch animals) and labor (from draught animals) for farming. It supports food production and reduces reliance on machines.
8. For increasing production, what is common in poultry, fisheries, and bee-keeping?
Answer:
All three involve the use of scientific techniques like selective breeding, proper nutrition, disease control, and management practices to boost production and quality.
9. How do you differentiate between capture fishing, mariculture, and aquaculture?
Answer:
- Capture fishing: Getting fish from natural water bodies.
- Mariculture: Farming fish in seawater.
- Aquaculture: Farming fish in freshwater or brackish water environments.
Additional Comprehension Practice Questions (Class 9 Science NCERT)
10. What are macro-nutrients and micro-nutrients in plants?
Answer:
Macro-nutrients are required in large amounts (like nitrogen, phosphorus), while micro-nutrients are needed in smaller amounts (like iron, zinc) for plant health and growth.
11. How does inter-cropping help in pest control?
Answer:
By growing two different crops together, pests cannot easily spread across the field, lowering the risk of total crop damage.
12. Why is organic farming considered eco-friendly?
Answer:
Organic farming avoids chemicals and uses natural manures and pest control methods, which protect soil health and biodiversity.
13. How can crop yield be improved without expanding farmland?
Answer:
By using better seeds, fertilizers, irrigation, pest management, and scientific farming methods like crop rotation and inter-cropping.
14. What are some diseases that affect cattle and how are they prevented?
Answer:
Cattle suffer from bacterial, viral, and parasitic diseases. These can be prevented by proper vaccinations, hygiene, and good nutrition.
15. Why is bee-keeping a good source of income for farmers?
Answer:
Bee-keeping requires low investment and provides honey and wax, which have high market value. It also supports crop pollination.
16. What is the role of irrigation in crop production?
Answer:
Irrigation provides water when rainfall is not enough, helping crops grow better and boosting yields.
17. What is composite fish culture and what are its benefits?
Answer:
Composite fish culture involves raising different fish species together that use different food layers in a pond. It ensures efficient use of resources and higher fish yields.
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