ROYAL PUBLIC SCHOOL
SECTOR – IV / B.S.CITY / SESSION 2016 -17
ASSIGNMENT WORK
Class – VIII
Sub – Science
Topic – 1. FOOD PRODUCTION
MULTIPLE CHOICE QUESTIONS
1. The science of agriculture includesa. Management of plants and animals
b. Management of plants
c. Management of animals
d. Management of humans
2. Transplantation is done in the case ofa. Wheat
b. paddy
c. maize
d. barley
3. Weeds can be defined asa. Useful plants present in the field
b. Undesirable plants present in the field
c. Plants that cannot be used at all
d. Undesirable insects present in the field
4. Manures area. Organic in nature
c. inorganic in nature
c. organic as well as inorganic in nature
d. none of aboved.
5. To improve the varieties of crop the technique employed is –
a. Transplantation
b. broadcastion
c. hybridization
d. cultivation
6. Cereals generally providea. Proteins
b. sugars
c. fats
d. vitamins
7. Which method, according to you, can bring about the maximum increase in crop production in our country in
future?
a. Increasing land under cultivation
b. Using more manures and fertilisers
c. Less wastage in storage
d. Using better varieties of crop plants
8. The plant roots contain nitrogen fixing bacteria ………………………. .
a. Orange
b. pea
c. mango
d. tomato
9. …………………….. does not include Agricultural practices.
a. Irrigation
b. marketing
c. harvesting
d. multiple cropping
10. ………………… is the process of loosening and turning of the soil.
a. Threshing
b. ploughing
c. leveling
d. manuring
11. The crops grown in rainy season are called
a. Kharif crops
b. fabi crops
c. summer crops
d. horticulture crops
12. Coffee, tea, rubber, coconut are examples of
a. Plantation crops
b. cereal crops c. fibre crops
d. pulses
13. Growing different crops one after the other in the same field is called
a. Multiple cropping
b. crop rotation
c. mixed cropping
d. crop harvesting
14. Production of good quality grains in the country to make it self-sufficient is called
a. White revolution
b. green revolution
c. blue revolution
d. silver revolution
15. Rearing of honey bees on a large scale to get honey is called
a. Apiculture
b. sericulture
c. pisciculture
d. horticulture
16. The food grains to be stored in silos should not have moisture content more than
a. 7 per cent
b. 9 per cent
c. 12 per cent
d. 4 per cent
17. What term is used to refer such crops which are sown in rainy season?
a. Kharif crops
b. rabi crops
c. zayed crops d. cash crops
18. What term is used to refer such crops which are sown in winter season?
a. Kharif crops
b. rabi crops
c. zayed crops d. cash crops
19. What term is used to indicate the felling of mature crop due to rains accompanied by fast and strong winds?
a. Water logging b. lodging
c. threshing
d. harvesting
20. What term is used to refer such crops which are sown in summer season?
a. Kharif crops
b. rabi crops
c. zayed crops d. cash crops
21. What term is used to describe the condition which arises?
a. Water logging b. lodging
c. threshing
d. harvesting
22. The big pieces of soil in the ploughed field are called:
a. Crumbs
b. flakes
c. lumps
d. all of these
23. The simple tool used for removing weeds and for loosening the soil is called:
a. Hoe
b. plough
c. cultivator
d. sickle
24. The process of sowing seeds by hand is called:
a. Broadcasting
b. lodging
c. cultivation
d. weeding
25. The spraying of weedicides in the field is done during:
a. Vegetative growth of weeds
b. Before flowering of crop plants.
c. Before seed formation of crop plants
d. All of these.
26. The science which deals with breeding, feeding and caring of domestic animals is called …………
a. Animal husbandry
b. breeding
c. horticulture
d. pisciculture
27. Which of the following is not a cereal?
a. Maize
b. pea
c. bajra
d. barley
28. Urea is a …………….. .
a. Fertilizer
b. compost
c. manure
d. none of these
29. Rhizobium bacteria are found in ………………
a. Leaves
b. stem
c. root nodules
d. flowers
30. For the uniform distribution of water and manure in a field, a farmer practices ………… .
a. Ploughing
b. leveling
c. manuring
d. none of these
31. Uprooting of weeds by a garden trowel is a method of controlling them ………………… .
a. Chemically
b. mechanically
c. biologically d. none of these
32. Before sowing, seeds should be treated with ………………. .
a. Insecticides
b. pesticides
c. fungicides
d. fertilisers
33. The soil which needs less frequent irrigation is ………………….. .
a. Sandy b. clayey
c. rocky
d. loamy
34. Which of the following crops requires standing water?
a. Wheat
b. rice
c. cotton
d. maize
FILL IN THE BLANKS.
1. The domestication of plants in called …………….. .
2. The growing of same kind of plants in called ………………. .
3. Leveling in done by ………………… .
4. Ploughing help to …………………… the soil.
5. Sowing of seeds is done with the help of a ……………. .
6. Excessive water of plants leads to …………………… .
7. Unwanted plants which grow along with main crop are called …………….. .
8. The chemical used to kill weeds are called ………………….. .
9. The machine used for cutting and threshing of crops is called …………… .
10. Large scale storing of grains is done in ……………………… .
11. Coffee and tea are classified as …………… crops.
12. The tool used to sow seeds is called ………………….. .
13. Fish food is rich in ………………… .
14. A common nitrogenous fertilizer is …………………… .
15. …………………….. is a machine which carries out threshing along with harvesting.
16. ………………… crop is transplanted in standing water.
17. ………………… and ……………….. are examples of chemical weedicides.
18. Stock maintained to compensate for the shortage due to failure of monsoons is known as …………
19. Organisms which damage the crop are known as ………………. .
20. The leaching of nitrates and phosphates into the rivers causes …………….. .
21. The sowing of seeds in nurseries and then transferring seedlings into main field in known as ……..
22. Micronutrients are ……………………… in number while macronutrients are …………….. in number.
23. The crops that are sown in the winter season are called ………………..
24. The ploughed land is leveled with the help of ………………. .
25. The supply of water to plants at regular intervals through sources other than rain is called
………………..
26. The unwanted plants which grow along with the main crop in a field are called ……………….
27. ………………… helps in the separation of the grains from the husk.
28. Plants of same kind grown at one place on a large scale are called ……………… .
29. The process of transferring the seedling from nurseries to fields is called ……………. .
30. Pesticides include rodenticides and ………………… .
STATE TRUE OF FALSE.
1. Earthworm is friend of the farmer.
2. Weedicides make the weeds grow well.
3. Canals, wells and rains are the sources of water for irrigation.
4. Crop rotation helps to increase the fertility of soil.
5. Crop can be damaged by excess supply of water.
6. Wheat, barley, rice fall under the category of pulse crop.
7. The science of growing vegetables and flowers is called agriculture.
8. The science of growing plants useful to man is called agriculture.
9. Amaranthus is a kind of weed.
10. Wheat crop is harvested in the month of October.
11. Less supply of water to crops results in a condition called water logging.
12. The process of removing weeds is called weeding.
13. Combine is a combination of two machines, i.e., harvester and thresher.
14. The nutrients in the soil can be replenished by crop rotation.
15. The felling of mature crop in the field is called lodging.
16. On small scale, farmers store grains in jute bags.
17. Introduction of fertilisers into the field is called biological control of weeds.
18. The product of cultivated plant is called harvesting.
19. Pests are organism that attack and damage crops.
20. Kharif crops are harvested at the end of monsoon season.
MATCHING TYPE QUESTIONS ( MTQ)
Column A
1. Silos
2. Duck, chicken and turkey
3. Fish farming
4. Rabi crop
5. Coffee,tea
Column B
a. plantation
b. storage of grains
c. wheat
d. poultry
e. pisciculture
VERY SHORT ANSWER QUESTIONS.
1. Define agriculture.
2. What is sowing?
3. Which season is suitable for rabi crops?
4. Name two kharif crops.
5. What us irrigation?
6. What are manures?
7. Name some weeds which grow naturally in the fields.
8. Give example of two weedicides.
9. What are granaries?
10. What is hybridization?
11. Expand HYV.
12. What is apiculture?
13. What is a seed drill used for?
14. Who is considered the father of Green Revolution?
15. What should be the moisture content in grains at the time of storing?
16. If wheat were sown in kharif season, what would happen ?
17. How can we control the weeds?
18. How kharif crops differ from rabi crops?
19. How macronutrients differ from micronutrients?
20. Why preparation of soil is considered to be an important step in agricultural practices?
21. What are the two methods of sowing seeds?
22. Name two main modern methods of irrigation.
23. Which crop is sown in the rainy season?
24. Name two rabi crops.
25. What is the first step for growing a crop?
26. Name the nitrogen – fixing bacteria present in root nodules of leguminous plants.
27. Name a common weedicide.
SHORT ANSWER QUESTIONS.
1. Name two crop plants for each of the following:
a. Pulses
b. Plantation crops
2. What is crop rotation?
3. What is animal husbandary?
4. What is pisciculture?
5. Mention two way in which weeding can be done.
6. How can pest be controlled?
7. Why is the depth at which seeds are planted important?
8. Explain the important tasks employed in the preparation of soil.
9. Name some common crop plants.
10. What are weeds? Give examples.
11. What is crop rotation? What is its advantage?
12. What precautions should be taken while sowing seeds?
13. What are high yielding varieties (HYV)? How are they obtained?
14. Why is proper irrigation of crops important?
15. Give two examples of the following:
a. Kharif crops
b. rabi crops
c. summer crops
16. Name the various agricultural practices.
17. What is meant by transplantation technique?
18. What is meant by crop rotation?
19. What are rabi crops?
20. Give two advantages of ploughing.
21. What are the advantages of leveling?
22. What is meant by agricultural implements?
23. How do leguminous plants help in maintaining the soil fertility?
24. What is pisciculture?
25. Why is it important to sow seeds at a correct distance from each other?
26. Give two precautions that must be taken while sowing seeds.
27. How does winnowing help in separation of grains from husk?
28. Why is the spraying of pesticides harmful to us?
LONG ANSWER QUESTIONS.
1. Write a short note on preparation of soil?
2. What are the differences between manure and fertilizer?
3. What is Green Revolution?
4. How is transplanting useful to the farmer?
5. What is mixed cropping?
6. Explain in detail how nitrogen is fixed.
7. Draw a diagram to show Nitrogen Cycle.
8. Why should grains be dried before storage?
9. Some seeds are given to you to grow. What factors will you keep in mind?
10. Explain in detail.
a. Differences between manure and fertilizer.
b. Animal husbandry and its components.
c. Various types of animals that provide food for human consumption.
11. How can we control weeds?
12. Write the function of the following:
a. Seed drill
b. Scarecrow
c. Harvester
d. Cultivator
e. Dhekli
13. What are weeds?
14. Write names of a few weeds.
15. Why they should be removed from the field?
16. Write differences between fertilisers and manure.
17. What is irrigation? Describe two methods of irrigation which conserve water.
18. Explain how the soil is affected by the continuous plantation of crops in a field.
19. Explain the importance of the following:
a. Irrigation
b. weeding
c. transplantation
20. Define the following:
a. Threshing
b. harvesting
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