Extra 40 multiple-choice questions (MCQs) with answers from the chapter:15 "Improvement in Food Resources" for Class 9 Science (CBSE):-

 

1. Which of the following is a Kharif crop?
a) Wheat
b) Barley
c) Rice
d) Gram
✅ Answer: (c) Rice

2. Which of the following is a Rabi crop?
a) Maize
b) Wheat
c) Paddy
d) Cotton
✅ Answer: (b) Wheat

3. What is the main source of nutrients for plants?
a) Water
b) Soil
c) Sunlight
d) Air
✅ Answer: (b) Soil

4. Which nutrient is required for the formation of proteins in plants?
a) Nitrogen
b) Phosphorus
c) Potassium
d) Calcium
✅ Answer: (a) Nitrogen

5. Which method is best suited for irrigation in dry regions?
a) Canal irrigation
b) Drip irrigation
c) Sprinkler irrigation
d) Rainwater harvesting
✅ Answer: (b) Drip irrigation

6. Which microorganism is used as a biofertilizer?
a) Rhizobium
b) Salmonella
c) Plasmodium
d) E. coli
✅ Answer: (a) Rhizobium

7. Which of the following is an organic manure?
a) Urea
b) Superphosphate
c) Compost
d) Potash
✅ Answer: (c) Compost

8. Which of the following is NOT a macronutrient required by plants?
a) Iron
b) Nitrogen
c) Phosphorus
d) Potassium
✅ Answer: (a) Iron

9. Which cropping pattern involves growing different crops in alternate years?
a) Mixed cropping
b) Crop rotation
c) Intercropping
d) Monocropping
✅ Answer: (b) Crop rotation

10. Which method is used to control weeds in crops?
a) Crop rotation
b) Use of pesticides
c) Weedicides
d) All of the above
✅ Answer: (d) All of the above

 

11. Which vitamin is present in milk in large amounts?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin B12
✅ Answer: (a) Vitamin A

12. Which of the following is an exotic breed of cow?
a) Red Sindhi
b) Gir
c) Jersey
d) Sahiwal
✅ Answer: (c) Jersey

13. Poultry farming is related to the rearing of which animal?
a) Fish
b) Cattle
c) Sheep
d) Hen
✅ Answer: (d) Hen

14. Which of the following is a marine fish?
a) Rohu
b) Catla
c) Pomfret
d) Silver carp
✅ Answer: (c) Pomfret

15. Which fish culture is practiced in inland water bodies?
a) Marine fishery
b) Inland fishery
c) Deep-sea fishing
d) None of the above
✅ Answer: (b) Inland fishery

16. Apiculture is related to the rearing of:
a) Silkworms
b) Honeybees
c) Poultry
d) Sheep
✅ Answer: (b) Honeybees

17. What is the main product obtained from sericulture?
a) Honey
b) Silk
c) Meat
d) Wool
✅ Answer: (b) Silk

18. Which of the following is NOT a disease in cattle?
a) Foot-and-mouth disease
b) Anthrax
c) Black rot
d) Rinderpest
✅ Answer: (c) Black rot

19. Which of the following is an improved breed of buffalo?
a) Murrah
b) Jersey
c) Sahiwal
d) Gir
✅ Answer: (a) Murrah

20. The main food source for fish in fish farming is:
a) Zooplankton
b) Insects
c) Fruits
d) Grains
✅ Answer: (a) Zooplankton

 

21. What is the main purpose of crop rotation?
a) Reduce soil erosion
b) Maintain soil fertility
c) Reduce pests and diseases
d) All of the above
✅ Answer: (d) All of the above

22. What is green manure?
a) Cow dung
b) Rotten vegetables
c) Decomposed green plants
d) None of the above
✅ Answer: (c) Decomposed green plants

23. Which irrigation method reduces water wastage?
a) Flood irrigation
b) Drip irrigation
c) Canal irrigation
d) River irrigation
✅ Answer: (b) Drip irrigation

24. Which is a rabi season crop?
a) Wheat
b) Maize
c) Paddy
d) Cotton
✅ Answer: (a) Wheat

25. Which of the following is NOT an organic farming method?
a) Use of biofertilizers
b) Crop rotation
c) Use of chemical pesticides
d) Vermicomposting
✅ Answer: (c) Use of chemical pesticides

26. What is vermicomposting?
a) Use of bacteria for composting
b) Use of earthworms for composting
c) Use of fertilizers
d) None of the above
✅ Answer: (b) Use of earthworms for composting

27. What is the role of Rhizobium bacteria in agriculture?
a) Fixes atmospheric nitrogen
b) Causes plant diseases
c) Destroys soil fertility
d) Produces oxygen
✅ Answer: (a) Fixes atmospheric nitrogen

28. Which plant nutrient helps in root development?
a) Nitrogen
b) Phosphorus
c) Potassium
d) Magnesium
✅ Answer: (b) Phosphorus

29. What is hybridization in crops?
a) Crossbreeding two varieties
b) Growing different crops together
c) Use of fertilizers
d) Cutting and replanting plants
✅ Answer: (a) Crossbreeding two varieties

30. What is the function of potassium in plants?
a) Improves root development
b) Increases resistance to diseases
c) Helps in photosynthesis
d) Forms proteins
✅ Answer: (b) Increases resistance to diseases

 

31. Which disease is caused by a deficiency of iron in plants?
a) Chlorosis
b) Rust
c) Smut
d) Wilt
✅ Answer: (a) Chlorosis

32. Which of the following is NOT a method of weed control?
a) Use of herbicides
b) Crop rotation
c) Hybridization
d) Mechanical removal
✅ Answer: (c) Hybridization

33. Which of the following is a leguminous crop?
a) Wheat
b) Barley
c) Gram
d) Rice
✅ Answer: (c) Gram

34. What is the main advantage of mixed cropping?
a) Increased yield
b) Better soil fertility
c) Reduced risk of crop failure
d) All of the above
✅ Answer: (d) All of the above

35. Which of the following is a viral disease in cattle?
a) Foot-and-mouth disease
b) Anthrax
c) Rinderpest
d) Both (a) and (c)
✅ Answer: (d) Both (a) and (c)

36. What is the main source of nitrogen for plants?
a) Air
b) Water
c) Soil
d) Fertilizers
✅ Answer: (c) Soil

37. Which of the following is NOT a component of organic farming?
a) Use of chemical pesticides
b) Green manure
c) Crop rotation
d) Biofertilizers
✅ Answer: (a) Use of chemical pesticides

38. Which of the following is NOT a function of phosphorus in plants?
a) Root development
b) Energy transfer
c) Leaf formation
d) Seed formation
✅ Answer: (c) Leaf formation

39. What is the purpose of fish culture in fisheries?
a) Increase fish population
b) Improve fish quality
c) Meet food demands
d) All of the above
✅ Answer: (d) All of the above

40. What is the main cause of soil degradation?
a) Overgrazing
b) Deforestation
c) Excessive use of fertilizers
d) All of the above
✅ Answer: (d) All of the above