7. The best time to remove weeds is:
a. Before sowing seeds
b. During flowering
c. Before they produce seeds
d. After harvesting
8. What is stored in silos?
a. Water
b. Fertiliser
c. Grains
d. Seeds
9. Drip irrigation is most suitable for:
a. Paddy fields
b. Wheat fields
c. Fruit plants
d. Pulses
10. Which of these crops requires a lot of water to grow?
a. Wheat
b. Paddy
c. Gram
d. Mustard
Section C: True/False
1. Tilling helps in loosening the soil.
2. Wheat is a Kharif crop.
3. Excessive use of fertilisers can pollute water.
4. Seed drills help in the manual sowing of seeds.
5. Irrigation frequency is higher in summer.
6. Crop rotation depletes soil nutrients.
7. Neem leaves are used for storing grains at home.
8. A combine machine is used for both harvesting and threshing.
9. Weeds do not affect crop growth.
10. Manure is prepared in factories.
Section D: Short Answer Questions
1. What are the differences between Kharif and Rabi crops?
2. Name two traditional and two modern methods of irrigation.
3. What are weedicides? How are they used?
4. Why is crop rotation important?
5. What is the role of earthworms in agriculture?
Section E: Long Answer Questions
1. Explain the basic steps of crop production.
2. What are the differences between fertilisers and manure?
3. Describe the traditional and modern methods of irrigation with examples.
4. How are grains protected during storage?
5. Discuss the impact of excessive fertiliser usage on soil and water.
Class 8 Science Crop Production and Management Extra Que Ans
