Important Questions for Class 8 Science - Crop Production and Management

One Word Answer Questions

Q.1. The ploughed field having big pieces of soil. 
Ans. Crumbs

CrumbsQ.2. The implement made up of wood and is drawn by a pair of bulls or other animals.
Ans. Plough

Q.3. Tool which is used for removing weeds and for loosening the soil.
Ans. Hoe

Q.4. Traditional tools and seed drill used in agriculture for. 
Ans. Sowing

Q.5. Organic nutrient for the soil.
Ans. Manure

Q.6. Bacteria present in the nodules of the roots of leguminous plants that atmospheric nitrogen.
Ans. Rhizobium

Q.7. The supply of water to crops at different intervals.
Ans. Irrigation

Q.8. Undesirable plants that grow naturally along with the crop.
Ans. Weed

Q.9. The cutting of crop after it is mature.
Ans. Harvesting

Q.10. Harvesting done manually.
Ans. Sickle

SickleQ.11. Silos and granaries.
Ans. Storage

Q.12. Animal rich in vitamin D.
Ans. Fish

Foods Rich in Vitamin D

Q.13. Separation of the grains from the chaff.
Ans. Threshing

Fill in the Blanks

Q.1. ______ crop is harvested in October.
Ans. Rabi

Q.2. The kind of crop grown only for sale profit is ______.
Ans. Cash crops

Q.3. ______ is used to till the soil in agriculture.
Ans. Pillar

Q.4. The agricultural implement used to sow seeds is called ______.
Ans. Seed drill

Q.5. Preparation of soil involves ______ and ______ it.
Ans. Loosening and turning

Q.6. The method of irrigation in which emitters let out drops of water near the roots is called ______.
Ans. Drip irrigation

Q.7. Two plantation crops are ______ and ______.
Ans. Coffee and rubber

Q.8. Threshing can be done using the machine ______.
Ans. Combine

Q.9. Removing the chaff from the grain is called ______.
Ans. Winnowing

Q.10. The same kind of plants grown and cultivated on a large scale at a place is called ______.
Ans. Crop

Q.11. Damaged seeds would ______ on top of the water.

Ans. Float

Q.12. For growing a crop, sufficient sunlight ______ and ______ from the soil are essential.
Ans. Water and nutrients

Q.13. A ______ a man-made chemical substance which supplies specific nutrients to the soil.
Ans. Fertilizer

Q.14. ______ improves the texture of soil.
Ans. Manure

Q.15. The process of removing weeds is called ______.
Ans. Weeding

Q.16. ______ is the process of cutting and gathering the ripened crops.
Ans. Harvesting

Q.17. ______ is result of too much water given to the soil.
Ans. Waterlogging

Q.18. ______ is a process of supplying water to crops at different intervals.
Ans. Irrigation

Q.19. Soil can be replenished through methods like ______ and ______.
Ans. Crop rotation and mixed cropping

Q.20. Freshly harvested grains are sundried to remove ______.
Ans. Moisture

True or False

Q.1. Rice is a kharif crop.
Ans. True

Q.2. Jute is a rabi crop.
Ans. False

Q.3. Using good quality seeds is the only way to get high yield.
Ans. False

Q.4. Manure is an organic matter.
Ans. True

Q.5. The first agricultural task is the sowing of seeds.
Ans.  False

Q.6. Earthworms are farmers friendly.
Ans. True

EarthwormsQ.7. All crop plants are sown as seeds in the field.
Ans. False

Q.8. Combines are used for harvesting only.
Ans. False

Q.9. Drip irrigation system is an economical method of irrigation.
Ans. True

Q.10. The irrigation process destroys the soil.
Ans. False

Q.11.  Putting some dried neem leaves in the drum containing grain prevents the attack by insect pests.
Ans. True

Q.12. Peas are not rabi crops.
Ans. False

Q.13. Sprinkler is not good for sandy soil.
Ans. False

Q.14. The loosened soil helps in the growth of earthworms and microbes present in the soil.
Ans. True

Q.15. The use of cultivator uses labour and time.
Ans. False

Q.16. Continuous growing of crops makes the soil poorer in nutrients.
Ans. True

Q.17. Drip system is used for uneven land.
Ans. False

Q.18. Tilling before sowing crops helps in uprooting and killing weeds.
Ans. True

Q.19. The fresh crop has less moisture.
Ans. False

Q.20. We get cod liver oil from milk yielding animals.
Ans. False