28 MCQ Questions for Class 9 Science: Chapter 12 Improvement In Food Resources
Question 1. What is the average width of the Himalayan ranges?
a) 150-200 Km
b) 200-250 Km
c) 250-300 Km
d) 300-350 Km
Answer:
a) 150-200 Km
Question 2. The highest peak in the Eastern Ghats is:
a) Anai Mudi
b) Mahendragiri
c) Kanchenjunga
d) Doda Betta
Answer:
b) Mahendragiri
Question 3. What is a major source of food for humans?
a) Minerals
b) Plants and animals
c) Water
d) Sunlight
Answer:
b) Plants and animals
Question 4. The Green Revolution contributed to:
a) Decrease in food-grain production
b) Increase in food-grain production
c) Increase in milk production
d) Decrease in agricultural land
Answer:
b) Increase in food-grain production
Question 5. Which crop provides carbohydrate for energy?
a) Pulses
b) Oil seeds
c) Cereals
d) Vegetables
Answer:
c) Cereals
Question 6. Which practice is involved in the first stage of improving crop yields?
a) Protection of crops
b) Choice of seeds for planting
c) Nurturing of the crop plants
d) Harvesting
Answer:
b) Choice of seeds for planting
Question 7. What does hybridisation refer to in crop variety improvement?
a) Use of chemical fertilizers
b) Crossing between genetically similar plants
c) Crossing between genetically dissimilar plants
d) Growing crops without water
Answer:
c) Crossing between genetically dissimilar plants
Question 8. What is the main purpose of using manure in crop production?
a) To increase the water holding capacity of the soil
b) To make the soil less fertile
c) To attract insects
d) To decrease the organic matter in the soil
Answer:
a) To increase the water holding capacity of the soil
Question 9. What is the main component of manure?
a) Inorganic matter
b) Organic matter
c) Water
d) Air
Answer:
b) Organic matter
Question 10. What are the benefits of mixed cropping?
a) Increases risk of crop failure
b) Ensures soil fertility
c) Reduces risk and provides insurance against crop failure
d) Requires more fertilizers
Answer:
c) Reduces risk and provides insurance against crop failure
Question 11. What is the advantage of inter-cropping?
a) It decreases soil fertility
b) It increases the chance of diseases
c) It ensures maximum utilization of nutrients
d) It requires only one type of crop
Answer:
c) It ensures maximum utilization of nutrients
Question 12. Crop rotation helps in:
a) Reducing the yield
b) Growing only one type of crop
c) Preventing soil depletion
d) Increasing the need for fertilizers
Answer:
c) Preventing soil depletion
Question 13. Why are weeds removed from the fields?
a) They enhance crop growth
b) They compete with crops for nutrients
c) They are useful for the soil
d) They attract beneficial insects
Answer:
b) They compete with crops for nutrients
Question 14. Which is a method to protect crops from pests and diseases?
a) Irrigation
b) Use of pesticides
c) Planting more crops
d) Reducing the use of manure
Answer:
b) Use of pesticides
Question 15. What is the primary purpose of cattle farming?
a) For meat only
b) For sports
c) For milk and draught labour
d) For entertainment
Answer:
c) For milk and draught labour
Question 16. What does ‘poultry farming’ primarily produce?
a) Milk and honey
b) Eggs and chicken meat
c) Fruits and vegetables
d) Wool and silk
Answer:
b) Eggs and chicken meat
Question 17. What is the main advantage of fish farming?
a) It increases the risk of fish extinction
b) It allows for the efficient production of fish in controlled environments
c) It requires larger water bodies
d) It is more expensive than traditional fishing
Answer:
b) It allows for the efficient production of fish in controlled environments
Question 18. Which method is commonly used for improving cattle breeds?
a) Genetic modification
b) Cross-breeding
c) Selective feeding
d) Natural selection
Answer:
b) Cross-breeding
Question 19. What is a significant characteristic of the Italian bee variety used in bee-keeping?
a) Low honey collection capacity
b) Aggressive nature
c) High honey collection capacity
d) Inability to breed well
Answer:
c) High honey collection capacity
Question 20. What is the main advantage of organic farming?
a) Uses only chemical fertilizers
b) Increases soil erosion
c) Minimizes or avoids the use of chemical inputs
d) Requires more water than traditional farming
Answer:
c) Minimizes or avoids the use of chemical inputs
Question 21. Crop rotation helps in preventing soil _________ by allowing different kinds of plants to replenish the soil nutrients.
Answer:
depletion
Question 22. _________ farming is a method that minimizes the use of chemical inputs.
Answer:
Organic
Question 23. The process of crossing genetically different varieties of plants is known as _________.
Answer:
hybridisation
Question 24. In cattle farming, one of the main purposes is to produce _________ and draught labour.
Answer:
milk
Question 25. Poultry farming primarily produces _________ and chicken meat.
Answer:
eggs
Question 26. The Green Revolution led to a decrease in food-grain production. (True/False)
Answer:
False
Question 27. Weeds in the field are beneficial for the growth of crops. (True/False)
Answer:
False
Question 28. Manure mainly consists of inorganic matter. (True/False)
Answer:
False
Question on Match the Columns
Unmatched Columns – Questions
| Column A | Column B |
|---|---|
| (i) Hybridisation in crops | (a) Increasing soil fertility with organic matter |
| (ii) Use of manure | (b) Cross-breeding different plant varieties |
| (iii) Organic farming | (c) Cultivation with minimal use of chemicals |
| (iv) Poultry farming | (d) Rearing domestic fowl for eggs and meat |
| (v) Crop rotation | (e) Different crops grown in succession to improve soil health |
| (vi) Aquaculture | (f) Fish farming in controlled environments |
Matched Columns – Answer
| Column A | Column B |
|---|---|
| (i) Hybridisation in crops | (b) Cross-breeding different plant varieties |
| (ii) Use of manure | (a) Increasing soil fertility with organic matter |
| (iii) Organic farming | (c) Cultivation with minimal use of chemicals |
| (iv) Poultry farming | (d) Rearing domestic fowl for eggs and meat |
| (v) Crop rotation | (e) Different crops grown in succession to improve soil health |
| (vi) Aquaculture | (f) Fish farming in controlled environments |
