NATURAL RESOURCES AND ASSOCIATED PROBLEMS : FOOD RESOURCE >> Q.1. What is importance of food?Ans. Food is essential for normal life, growth and development of an organism.Q.2. List 3 important food resources.Ans. 1. Vegetation 2. Animals 3. MineralsQ.3. List 3 important cereals used as staple food.Ans. 1. Rice 2. Wheat 3. CornQ.4. What are millets?Ans. Coarse grains like Jawar and BajraQ.5. What is major cause for shortage of food in developing countries?Ans. Population explosionQ.6. When was green revolution started in India ?Ans. In 1960Q.7. Who is father of green revolution ?Ans. Norman Barlaug of Mexico. He was awarded Nobel prize for peace in 1975.Q.8. Who is father of Indian green revolution?Ans. Dr.M.S. Swaminathan, basically a radiation breeder. Q.9. Why green revolution is no more effective these days ?Ans. Green revolution requires the use of chemical fertilizers and pesticides which have polluted air, soil as well as water.Q.10. What is sustainable agriculture ?Ans. Sustainable agriculture is that which is economically viable, socially acceptable and environment friendly.Q.11. What is monoculture ?Ans. Cultivation of any single crop at one time.Q.12. What is integrated crop management ?Ans. Mixed cropping using organic manure and bio insecticides. Q.13. What is prime cause of the world food problem ?Ans. Population explosion.Q.14. Who had pointed out the inverse relationship between food production and human population?Ans. MalthusQ.15. After which year population growth became more brisk ?Ans. After 1950Q.16. List 4 requirements of green revolution ?Ans.1. To sow high yielding varieties.2. Irrigation3. Use of fertilizers4. Use of pesticides Q.17. Why Green revolution is considered as boon as well as bane ?Ans. Boon because production increases and bane because it adds to diseases and pests.Q.18. What is genetic engineering ?Ans. Introducing gene of better production in crop plants.Q.19. Why cultivable land is decreasing ?Ans. Agricultural land is diverted to construct residential colonies in view of increasing population.Q.20. List any 3 cash crops.Ans. 1. Cotton2. Groundnut3. SugarcaneQ.21. List 4 countries where more cultivable land is available ?Ans. 1. America2. Brazil3. Argentina4. CanadaQ.22. List any 4 natural hazards which affect agriculture ?Ans. 1. Irregular rains 2. Drought3. Hail storm4. FrostQ.23. How much of the world population consumes fish ?Ans. 2 %Q.24. Which country is using marine Algae to the extent of 25% in its daily diet ?Ans. Japan.Q.25. Which date is observed as world food day by U.N.O.?Ans. 16th October.Q.26. What is the aim of world food day ?Ans. To create awareness regarding proper distribution of food grains at world level.Q.27. To which crop “Jhum cultivation” is applicable ?Ans. Rice.Q.28. What are 2 other names of Jhum cultivation ?Ans. 1. Shifting cultivation2. Swidden cultivation Q.29. What is Grey revolution ?Ans. Use of chemical fertilizers like urea.Q.30. Which fertilizer is connected with blue baby syndrome ?Ans. Nitrate fertilizer.Q.31. Which pesticide has been banned in India w.e.f. 1985 ?Ans. D.D.T.Q.32. What is biological amplification ?Ans. Increase in the concentration of harmful chemical at each level of foodchain.Q.33. What are bad effects of DDT on human beings ?Ans. 1. Hypertension2. Softening of brain tissue3. Liver cancerQ.34. What is organic farming ?Ans. Use of dung manure and manure from organic wastes such as banana leaves and nitrogen fixing bacteria like Azotobacter agilis to increase the soil fertility is called organic farming.Q.35. What is the cause of salinity?Ans. Excessive irrigation and water logging.Q.36. What is the name for saline soil ?Ans. “USAR” soil.Q.37. Why USAR soil is less fertile ?Ans. Because its PH value is 8 or more while the PH value of fertile soil is 6.5 to 7.Q.38. What is major cause of salinity in India ?Ans. Construction of dams. Q.39. Jhum cultivation is practiced by the tribes in which state? Ans. Assam.Q.40. Which state in India has made use of maximum chemical fertilizers?Ans. Punjab.Q.41. What type of pollution is caused by DDT?Ans. Air pollution, water pollution as well as soil pollution.Q.42. In which year India banned the use of DDT?Ans. In 1985.Q.43. What is bio-magnification?Ans. Ten times increase in the concentration of non biodegradable pesticide at each tropic level or the level of food chain.
Posted on: Sat, 08 Mar 2014 04:03:55 +0000
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