Wednesday 27 March 2019

Class IX IMPROVEMENT IN FOOD RESOURCES

Practice Paper
Subject Biology (2020)
 CH- 15  IMPROVEMENT IN FOOD RESOURCES  
Class IX
I.Very Short Answer Type Questions:
  1. Define photosynthesis.
  2. Write the name of any two food materials which provide us carbohydrates
  3. What is the embryo transfer technique?
  4. What is the National Dairy Research Institute? Where is it located?
  5. Cows A and B are the same weight. Cow A is fed on grass and cow B is fed on maize, grass, barley, etc. Which do you expect to give a higher quality of milk?
  6. What is the percentage of fat content in the milk from the Murrah and Sruti?
  7. What has the green revolution laid too?
  8. What has the white revolution led to?
  9. What are the photoperiods related to?
  10. What are the duration of Kharif and Rabi seasons?
  11. Write the name of three stages in which farming practices are divided.
  12. What do you mean by organic farming?
  13. Why does drought occur?
  14. What is mixing cropping?
  15. What is intercropping?
  16. Explained FYM.
  17. Name any two kinds of healthy animals. 
  18. Name any two factors on which variety improvement is done.
  19. What is the name given to the crop obtained by introducing a gene that provides the desired characteristics?
  20. Name two breeds of buffaloes. 
  21. Name two types of manure on the basis of the kind of biological material involved. 
  22. What is fish farming called?
  23. Name abiotic pesticides. 
  24. What is the main benefit of mixing cropping? 
  25. What is inner cropping? 
  26. What is crop rotation? 
  27. Give an example of the crops grown in 2 years rotation? 
  28. How are diseases in plants caused? 
  29. Name the biotic factors responsible for storage losses in agricultural produce
  30. What is the purpose of cattle husbandry? 
  31. Name two cattle breeds that show excellent resistance to disease. 
  32. Name the internal pesticides which affect the stomach in strength intestine and liver in cattle. 
  33. What is the purpose of poultry farming? 
  34. State any two control measures to be taken before grains are used.
  35. Name any two indigenous breeds of cattle.
II. Short Answer Type Questions:
  1. There is tremendous scope to develop fisheries in India. Give reasons.
  2. The production of food from animal sources has increased in the last few decades. Justify.
  3. Why are wrestlers and sportsmen recommended to have an egg, meat, and fish?
  4. Give two advantages of Holstein Friesian over the red Sindhi.
  5. How can you classify the practice involved in improving crop yields?
  6. Differentiate between manure and fertilizer.
  7. Explain the advantages of mixed farming.
  8. How are crop selected from crop rotation?
  9. Why should pesticides be used judiciously? 
  10. How is intercropping different from mixed cropping? 
  11. Why storage of grains leads to losses? What preventive and control measures are adopted before grains are stored for future use?
  12. Define animal husbandry. Why it is essential?
  13. What do you mean by livestock? Why its production needs to be improved?
  14. What is the importance of roughage and concentrates as components of animals fed? Which additive is added in the cattle feed for nutrients?
  15. Write the different ways by which crop production can be increased.
  16. Write the two types of manure which is based on the kind of biological material used.
  17. Define hybridization. State its type.
  18. What are manures? State two types of manure. How does manure affect soil fertility?
  19. Define crop rotation. What factors should be selected for crop rotation?
  20. Write three management practices while designing a shelter for cattle.
  21. Write one point difference between the tube well and dug well. How is the liver lift system adopted to supply water to the agricultural land?
  22. Giving an example of each, write one point of difference between micronutrient and macronutrient.
  23. What are the rabi and Kharif crops? Give one example of each. What is the photoperiod?
  24. Define capture fishing and culture fishery. Why are prawns and oysters cultivated?
  25. Differentiate between compost and vermicompost. What are the benefits of using manure in crop production?
  26. Differentiate between milch and draught animals. Name the two species of Indian cattle.
  27. Name two local and exotic breeds of bees used for commercial production of honey. List any three qualities for which foreign breeds are adopted.
  28. Why are fertilizer and manure used in the field? A farmer irrigated his field excessively just after applying fertilizers. Is it a correct practice?
  29. State two characteristics of an ideal cattle shed. Cattles are mainly reared for milk or performing agricultural tasks. What are these two categories of cattle known as? 
  30. What are the different kinds of irrigation systems adopted in our country to supply water to agricultural lands? Mention any three.
III. Long Answer type questions:
  1. Write the two advantages of composite fish culture. What is the application of hormonal stimulation in fish culture? Write one problem associated with composite fish culture.
  2. (a) Differentiate between broilers and layers.
    (b) Write two factors that can cause diseases to poultry fowls.
    (c) Nutritional requirements of broilers difference from egg layers. 
  3. List any six factors for which a variety of improvements in the crop is done.
    Difference between :
    (a) Inland fishery and marine fishery. 
    (b) Culture fishery and capture fishery.
  4. State one point of difference between biofertilizers and fertilizers. Give one example of each. What is the advantage of using biofertilizers over fertilizers?
  5. What are the weeds? Give two examples. Explain why is the removal of weeds necessary from the cultivated fields? Mention one method to control the growth of weeds. 
  6. (a) Give an example of each of bottom feeder, surface feeder and middle zone feeder that can be grown in composite fish culture.
    (b) State the problem faced in such a culture. Mention the way to overcome the problem.
  7. Define fumigation and fumigant. Give an example of the fumigant. How does fumigation differ from spraying? Give two points
  8. What are pests? How can plant pests be controlled? In what way bio-pesticides are better than chemical pesticides?
  9. (a) Classify the following as food or fodder crop: wheat berseem, oats, black gram.
    (b) List the two ways of incorporating desirable characters into crop varieties.
    (c) State two desirable agronomic characteristics for crop improvement.
  10. (a) Classify the following as Rabi and Kharif crop: paddy,  soya bean, wheat, and mustard.
    (b) Why are certain crops grown in a particular season? Give two reasons.
    (c) Explain how is green manure formed?
  11. India has a wide variety of water resources and a highly varied climate. Describe in briefly any five kinds of irrigation system adapted to supply water to agricultural lands.
  12. Improved poultry breeds are developed for some desirable traits. List five such desirable traits.
  13. (a) List the different ways in which biotic and abiotic factors affect stored food grains.
    (b) What preventive and control measures need to be taken before and after storing the grains name two weeks?
  14. (a) What is the common name of Apis flora and Apis Indica?
    (b) Name one Italian bee variety, also justify the use of the Italian bee for honey production. Giving two reasons.
    (c) State one factor which affects the quality of honey produced
  15. Briefly describe the formation of vermicompost and green manure. How can the poultry farms be prevented from various diseases? State any three methods.
  16. Unpredictable monsoon/droughts / low rainfall is adversely affecting the Indian agriculture
  17. (a) Mention any two initiatives that have been adopted to increase the availability of water for agricultural purposes.
  18. (b) State two advantages of making check dams.
  19. (c) Briefly describe the canal and river lift systems of irrigation.
  20. Describe briefly the traits and their utilities important for a cereal crop in the improvement of varieties. 
  21. Mention the type of loss caused by the inappropriate conditions of moisture and temperature prevailing during storage grains.
  22. (a) Name the two components of cattle feed and their function.
  23. (b) Name any two milch breeds of cow.
  24. What is organic farming? Weeds are unwanted plants in the cultivated field give some methods to eradicate them.
  25. Explain why legume crop does not require nitrogenous fertilizers?
  26. Why farmers grow guar before sowing of growing crop seeds?
NCERT QUESTIONS:
  1. What do we get from cereals, pulses, fruits, and vegetables?
  2. How do biotic and abiotic factors affect crop production? 
  3. What are the desirable agronomic characteristics for crop improvements?
  4. What are macro-nutrients and why are they called macronutrients?
  5. How do plants get nutrients?
  6. Compare the use of manure and fertilizers in maintaining soil fertility.
  7. Which of the following conditions will give the most benefits? Why?
    (a) Farmers use high-quality seeds, do not adopt irrigation or use fertilizers. 
    (b) Farmers use ordinary seeds, adopt irrigation and use fertilizer. 
    (c) Farmers use quality seeds, adopt irrigation, use fertilizer and use crop protection measures.
  8. Why should preventive measures and biological control methods be preferred for protecting crops?
  9. What factors may be responsible for losses of grains during storage?
  10. Which method is commonly used for improving cattle breeds and why?
  11. What management practices are common in dairy and poultry farming? 2. What are the differences between broilers and layers and in their management?
  12. Discuss the implications of the following statement: “It is interesting to note that poultry is India’s most efficient converter of low fiber foodstuff (which is unfit for human consumption) into highly nutritious animal protein food.”
  13. How are the fish obtained?
  14. What are the advantages of composite fish culture?
  15. What are the desirable characters of bee varieties suitable for honey production?
  16. What is pasturage and how is it related to honey production?
  17. Explain any one method of crop production which ensures high yield.
  18. Why are manure and fertilizers used in fields?
  19. What are the advantages of inter-cropping and crop rotation?
  20. What is genetic manipulation? How is it useful in agricultural practices?
  21. How do storage grain losses occur? 
  22. How do good animal husbandry practices benefit farmers?
  23. What are the benefits of cattle farming?
  24. For increasing production, what is common in poultry, fisheries, and bee-keeping?
  25. How do you differentiate between capture fishing, mariculture, and aquaculture?

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Sunday 24 March 2019

Class IX NATURAL RESOURCES 9


Practice Paper
Subject Biology (2020)
Class IX                         CH- 14 Natural Resources                                 
 I. Short Answer Type Questions:
  1. What are the resources on the Earth which are necessary to meet the basic requirements of all life-forms on the Earth?
  2. What do you mean by the lithosphere?
  3. Define the atmosphere.
  4. What causes winds?
  5. Why is water essential for life?
  6. Define hydrosphere.
  7. What is the biosphere?
  8. What are the abiotic and biotic components of the biosphere?
  9. The percentage of carbon dioxide in our atmosphere is a mere fraction of a percent, why?
  10. Which gas is produced when glucose molecules breakdown using oxygen
  11. Write the name of substance which are bits of decayed living organisms present in the soil.
  12.  What is the role of the atmosphere in climate control?
  13. Write two human activities that would lead to air pollution.
  14. What are the two biotic components of the biosphere?
  15. What is the role of root nodules in the leguminous plants?
  16. Which gas of atmosphere leads to global warming?
  17. Which compound is responsible for the hole in the Ozone layer of the atmosphere?
  18. write the name of gas which is a major component of the atmosphere of Venus and Mars
  19. Write the two factors which are responsible for weathering of rocks
  20. Which organism sensitive to a SO2 gas in the air
  21. What is the name of the symbiotic relationship between fungi and certain blue-green algae?
  22. Define nitrification
  23. How do global warming increase CO2 in the atmosphere?
  24. Write the name of free-living nitrogen-fixing bacteria.
  25. What are the ill effects of breathing polluted air on human health?
  26. Write the name of two forms of oxygen found in the atmosphere. What is its importance?
  27. Write two biologically important compounds that contain both nitrogen and oxygen.

II. Short Answer Type Questions:
  1. Write the name of two measures by which water pollution can be reduced
  2. What is the greenhouse effect?
  3. What is the role of the Ozone layer in the atmosphere? 
  4. Give reasons
    (a) Why lichens do not grow in the polluted areas?
    (b) How lichens help in making soil from rocks?
  5. Write the name of two gases which are formed by the burning of fossil fuels and dissolves in rainwater to form acid rain.
  6. Write two activities of humans that are responsible for an increase in the carbon dioxide content of the air.
  7. Give reasons:
    (a) The ozone layer should not be stable near the Earth's surface.
    (b) The combustion of fossil fuels increases the number of suspended particles in the air.
  8. (a) Why does Moon have very cold and very hot temperature variations even though it is at the same distance from the sun as earth?
    (b) Why does the Mathura Refinery Bose problem to the Taj Mahal?
  9. Differentiate between biodegradable and non- biodegradable pollutants.
  10. Why is water so necessary for all living organisms? Mention any two points in support of your answer. 
  11. Water is known as a wonder liquid that justifies this statement by giving any two reasons.
  12. Draw a diagram of the oxygen cycle occurring in nature.
  13. How the following factors contributed to the formation of soil?
    (a) Wind (b) Water (c) Sun
  14. How are acid rain and smog caused?
  15. How is the life of an organism living in water affected when water gets polluted
  16. Write any two ways by which water pollution affects the aquatic organisms
  17. What is the ozone hole where is it found? What is its effect?
  18. How are CFCs harmful to the environment and living beings?
  19. How are clouds formed? Explain in detail.
  20. Name the three constituents of abiotic components of the Biosphere. Explain their major role in the biosphere.
  21. Write the three harmful effects of pollutant water on the organisms
  22. State three harmful effects of the burning of fossil fuels.
  23. State reason for the following statement:
    (a) People love to fly kites near the seashore
    (b) Dust is a pollutant
    (c) Fertile soil has a lot of humus.
  24. How does the direction of the wind change in coastal areas during the daytime and during the night? Explain giving a reason. Name two more factors that influence winds.
  25. Write the name of two forms of carbon. Name any two forms in which carbon is found in a combined state. Briefly explain how it can be said that all life forms are based on carbon-containing molecules.
  26. Ozone is poisonous and is found in the upper atmosphere of Earth yet the world is worried about its depletion. Explain why? Write any two methods to control the ozone layer depletion.
  27. How is the atmosphere on earth different from the atmosphere on Venus and Mars? State two ways by which the percentage of carbon dioxide is fixed on the earth.
  28. Write the name :
    (a) the process by which carbon is incorporated into life forms.
    (b) the process by which nitrates are converted to free nitrogen.
    (c) the cyclic flow of nutrients like nitrogen and oxygen between the non-living environment and living organisms.
  29. What is the greenhouse effect? List two greenhouse gases.
  30.  State the ultimate effects on the increase in greenhouse gases in the environment
  31. How do modern farming practices bring about the conversion of fertile soil to barren soil? Explain briefly.
  32. What are two different states in which water is formed during the water cycle?
  33. What is the major source of fresh water in the city /town /village, where you live?
  34. Do you know of any activities which may be polluting these water sources?
  35. How does a forest play an important role in maintaining the water cycle?
III. Long Answer Type Questions:
  1. Explain the biological and physical methods of nitrogen fixation.
  2. How is soil formed? What is soil erosion? Write two steps to control soil erosion.
  3. What will happen if the Ozone Layer will completely be depleted?
  4. Describe an activity to explain the effect of flowing water on the topsoil and write your conclusion.
  5. Urbanization and industrialization are mainly responsible for the increase in environmental pollution justify this statement and suggest ways and means check it.
  6. Percentage of gases like oxygen nitrogen and carbon dioxide remain almost the same in the atmosphere. Give reasons.
  7. (a) Two elements hydrogen and oxygen form a compound Z which is required during the photosynthesis by plants and is necessary for life to identify that right its molar mass.
    (b) Draw the biochemical cycle of Z in nature and explain it.
  8. (a) Mention two consequences of the large scale deforestation.
    (b) How does the use of large amounts of fertilizers and pesticides harm the soil?
    (c) What is soil pollution?
    (d) What is the role played by the vegetative cover on the ground?
  9. (a) What is the role of the Sun in the formation of soil?
    (b) A motor car with its glass totally closed is parked directly under the Sun. The inside temperature of the car rises very high. Explain why?
  10. (a) Life does not exist on Mars and Venus. Why?
    (b) Why do we call the atmosphere as a blanket of the earth?
  11. (a) Draw a diagram of the nitrogen cycle in nature.
    (b) Mention any two differences between nitrogen fixation and nitrification.
  12. (a) Give a schematic representation of the carbon cycle, level the main process involved in it.
    (b) Give two ways in which nitrogen from the atmosphere is converted into a usable form.
  13. Why does the temperature range from - 190 Celsius to 110 Celsius on the surface of the moon?
  14. (a) How will you know that the air in your locality is contaminated with pollutants like Sulphur dioxide without having any technical instrument?
    (b) How does air pollution affect the living organism?
  15. (a) Does the availability of water support the richness of the biodiversity?
    (b) What will happen to the aquatic organism if you add the waste material or undesired substances into a pond?
  16. (a) What happened to the water vapour evaporates from the water bodies like the sea, river pond, etc.?
    (b) Is the biotic factor also responsible for the formation of soil?
  17. (a) Do you think that the abiotic factor helps in the formation of soil?
    (b) What happens to the fertilizers and pesticides used by farmers? Is it affect the living organism?
NCERT QUESTIONS:
  1. How is our atmosphere different from the atmospheres on Venus and Mars? 
  2. How does the atmosphere act as a blanket?
  3. What causes winds?
  4. How are clouds formed?
  5. List any three human activities that you think would lead to air pollution.
  6. Why do organisms need water?
  7. What is the major source of fresh water in the city/town/village where you live?
  8. Do you know of any activity which may be polluting this water source?
  9. How is soil formed? 
  10. What is soil erosion?
  11. What are the methods of preventing or reducing soil erosion?
  12. What are the different states in which water is found during the water cycle?
  13. Name two biologically important compounds that contain both oxygen and nitrogen.
  14. List any three human activities which would lead to an increase in the carbon dioxide content of the air.
  15. What is the greenhouse effect?
  16. What are the two forms of oxygen found in the atmosphere?
  17. Why is the atmosphere essential for life?
  18. Why is water essential for life?
  19. How are living organisms dependent on the soil? Are organisms that live in water totally independent of soil as a resource?
  20. You have seen weather reports on television and in newspapers. How do you think we are able to predict the weather?
  21. We know that many human activities lead to increasing levels of pollution of the air, water-bodies, and soil. Do you think that isolating these activities to specific and limited areas would help in reducing pollution?
  22. Write a note on how forests influence the quality of our air, soil and water resources.

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