Class 9 Science Chapter 12 Improvement in Food Resources – One Liner Questions and Answers
Q1. What are the two main sources of food for humans?
Ans. Plants and animals are the main sources of food.
Q2. What is the green revolution associated with?
Ans. The green revolution is associated with increased food grain production.
Q3. What is the white revolution related to?
Ans. The white revolution is related to increased milk production.
Q4. What are cereals rich in?
Ans. Cereals are rich in carbohydrates.
Q5. What do pulses mainly provide?
Ans. Pulses mainly provide proteins.
Q6. What do oilseeds provide?
Ans. Oilseeds provide fats.
Q7. What are kharif crops?
Ans. Crops grown in rainy season (June to October) are called kharif crops.
Q8. What are rabi crops?
Ans. Crops grown in winter season (November to April) are called rabi crops.
Q9. Name two examples of kharif crops.
Ans. Paddy and maize are kharif crops.
Q10. Name two examples of rabi crops.
Ans. Wheat and gram are rabi crops.
Q11. What is crop variety improvement?
Ans. Crop variety improvement refers to developing better crop varieties for high yield, quality, and resistance.
Q12. What is hybridisation?
Ans. Hybridisation is crossing between genetically dissimilar plants.
Q13. Name one method to develop genetically modified crops.
Ans. Introducing a specific gene into a plant.
Q14. What is biotic stress?
Ans. Stress caused by living factors like diseases and insects.
Q15. What is abiotic stress?
Ans. Stress caused by non-living factors like drought and salinity.
Q16. What is meant by wider adaptability?
Ans. Ability of crops to grow in different environmental conditions.
Q17. What is nutrient management?
Ans. Supplying proper nutrients to plants for better growth.
Q18. Name two macro-nutrients required by plants.
Ans. Nitrogen and phosphorus.
Q19. Name two micro-nutrients required by plants.
Ans. Iron and zinc.
Q20. What is manure?
Ans. Manure is organic matter obtained from decomposition of animal excreta and plant waste.
Q21. What is vermi-compost?
Ans. Compost prepared with the help of earthworms.
Q22. What is green manure?
Ans. Green plants ploughed into the soil to enrich it with nutrients.
Q23. What is fertilizer?
Ans. A chemical substance rich in plant nutrients.
Q24. Name two methods of irrigation.
Ans. Wells and canals.
Q25. What is mixed cropping?
Ans. Growing two or more crops simultaneously on the same field.
Q26. What is intercropping?
Ans. Growing two or more crops in a definite pattern on the same field.
Q27. What is crop rotation?
Ans. Growing different crops in succession on the same land.
Q28. What are weeds?
Ans. Unwanted plants growing along with crops.
Q29. What are herbicides?
Ans. Chemicals used to kill weeds.
Q30. What are insecticides and fungicides?
Ans. Chemicals used to kill insects and fungi.
Q31. What is animal husbandry?
Ans. Scientific management of animal livestock.
Q32. Name two Indian cattle breeds used for milch purposes.
Ans. Red Sindhi and Sahiwal.
Q33. What are milch animals?
Ans. Animals kept for milk production.
Q34. What are draught animals?
Ans. Animals used for farm labour.
Q35. What is poultry farming?
Ans. Rearing domestic fowl for eggs and meat.
Q36. What are broilers?
Ans. Poultry birds reared for meat.
Q37. What are layers?
Ans. Poultry birds reared for eggs.
Q38. What is aquaculture?
Ans. Farming of aquatic animals like fish.
Q39. What is mariculture?
Ans. Culture of marine fish and other marine organisms.
Q40. What is composite fish culture?
Ans. Rearing different species of fish together in a pond without competition for food.
Q41. Name two freshwater fish species.
Ans. Rohu and Catla.
Q42. What is bee-keeping?
Ans. Rearing of bees for honey and wax.
Q43. Name two Indian bee species used for honey production.
Ans. Apis cerana indica and Apis dorsata.
Q44. What is pasturage?
Ans. Availability of flowers for nectar collection by bees.
Q45. How can honey quality be improved?
Ans. By providing good pasturage with suitable flowers.