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daisy flower English 100 cards

Cards in this deck (100)

  1. 1Which among the following are abiotic limiting factors for a species? 1. Light 2. Water 3. Soil 4. Temperature Select the correct answer using the code given below. (a) 1 and 4 only (b) 2 and 4 only (c) 1, 2 and 3 only (d) 1, 2, 3 and 4D
  2. 2With reference to composting, consider the following statements: 1. It is a method of decomposition of solid wastes. 2. It requires high moisture content for the biological breakdown of the waste. 3. Carbon dioxide and heat are the by- products in the composting process. Which of the statements given above is/are correct? (a) 1, 2 and 3 (b) 2 and 3 only (c) 1 and 3 only (d) 2 onlyA
  3. 3Consider the following pairs: Metal Affects 1. Lead : Blood system 2. Beryllium : Mucus membrane of eyes 3. Nickel : Respiratory system Which of the pairs given above are correctly matched? (a) 1, 2 and 3 (b) 2 and 3 only (c) 1 and 2 only (d) 1 and 3 onlyA
  4. 4Consider the following statements regarding Eco-Mark : 1. It is issued by the Bureau of Indian Standards. 2. It is given to the products causing least damage to environment. 3. It is applicable to heavy machinery only Which of the statements given above is/are correct? (a) 1 and 3 only (b) 2 only (c) 1 and 2 only (d) 1, 2 and 3C
  5. 5Which of the following statements regarding biogas is not correct? (a) It is produced under anaerobic conditions. (b) It has low calorific value. (c) It burns without smoke or odour. (d) Methane and liquid humus are its main by-products.B
  6. 6Consider the following statements regarding humus: 1. It is highly prone to microbial action. 2. It serves as a reservoir of nutrients in nature. 3. It undergoes decomposition at very fast rate. Which of the statements given above is/are correct? (a) 2 only (b) 2 and 3 only (c) 3 only (d) 1, 2 and 3A
  7. 7Consider the following statements: 1. Boundries of national parks are marked by legislation. 2. Cultivation and grazing activities are not allowed inside a national park. Which of the statements given above is/are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2C
  8. 8Consider the following statements regarding Beej Bachao Andolan: 1. It was launched by the Ministry of Environment and Forests. 2. It aims to conserve traditional seeds varieties. 3. It promotes organic farming practices. Which of the statements given above is/are correct? (a) 1 only (b) 2 and 3 only (c) 1 and 2 only (d) 1, 2 and 3B
  9. 9Which of the following factors causes fluctuation in the density of population in a given habitat during a given period? 1. Natality 2. Mortality 3. Immigration 4. Emigration Select the correct answer using the codes given below. (a) 1 and 2 only (b) 2 and 3 only (c) 3 and 4 only (d) 1, 2, 3 and 4D
  10. 10Sacred groves are: (a) the underbrush growth of small trees. (b) trees with medicinal purpose. (c) the patch of trees segregated due to religious beliefs. (d) the group of trees whose species are endangered.C
  11. 11Which of the following is/are reasons for higher biological diversity in tropical region in comparison to temperate regions? 1. Tropical environments are less seasonal and relatively more constant. 2. Higher availability of solar energy in the tropics. 3. Tropical areas have undergone frequent glaciations in the past. Select the correct answer using the code given below. (a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) 1, 2 and 3B
  12. 12Which of the following statements is/are correct about a wildlife sanctuary? 1. A wildlife sanctuary focuses on protection of a single species. 2. Human activity is completely prohibited in a wildlife sanctuary. Select the correct answer using the code given below. (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2A
  13. 13Which of the following has the largest population in a food chain? (a) Heterotrophs (b) Autotrophs (c) Saprotrophs (d) ChemotrophsC
  14. 14Which of the following are the principle reasons behind the soil erosion? 1. Melting and movement of snow 2. Overgrazing by animals 3. Torrential rain 4. Surface mining Select the correct answer using the code given below. (a) 2 and 3 only (b) 1 and 4 only (c) 2, 3 and 4 only (d) 1, 2, 3 and 4D
  15. 15The presence of excess nitrate in drinking water causes which of the following disease? (a) Blue baby syndrome (b) Minamata (c) Fluorosis (d) SilicosisA
  16. 16Which of the following certification marks assure quality food products against adulteration? 1. FPO mark 2. Agmark 3. BIS hallmark Select the correct answer using the code given below. (a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) 1, 2 and 3B
  17. 17With reference to the ozone layer, consider the following statements: 1. It is present in the Stratosphere. 2. It absorbs ultraviolet radiations from the sun. 3. It is responsible for temperature inversion. Which of the statements given above is/are correct? (a) 1 and 3 only (b) 2 only (c) 1 and 2 only (d) 1, 2 and 3D
  18. 18Which among the following are influenced by photoperiod in an organism? 1. Breeding time 2. Migration 3. Hibernation Select the correct answer using the code given below. (a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3D
  19. 19Which among the following are negative interactions among species? 1. Commensalism 2. Predation 3. Colonisation 4. Competition Select the correct answer using the code given below. (a) 1 and 4 only (b) 1 and 3 only (c) 2 and 3 only (d) 2 and 4 onlyD
  20. 20With reference to estuaries, consider the following statements: 1. They are the transitional zone between the sea and rivers. 2. The level of nutrients is very low in the estuaries. 3. They are devoid of mangrove vegetation. Which of the statements given above is/are correct? (a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3A
  21. 21With reference to Biopiracy, consider the following statements: 1. It is unauthorised use of biological reserve by entities outside a country which has pre-existing knowledge of rare biological reserves. 2. It is linked only to drug research and development. Select the correct answer using code given below. (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2A
  22. 22Which of the following is/are the advantages of Environmental Impact Assessment (EIA)? 1. It identifies contentious issues and helps in resolving them. 2. It create a sense of local ownership among the people. 3. It ensures transparency in project. Select the correct answer using the code given below. (a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3D
  23. 23Which among the following is not an example of mutualism? (a) Cowbird feeds on ticks or other pests of the animal's back. (b) Relationship between alga and fungus that form lichens. (c) Nitrogen fixing rhizobium bacteria forms nodules in roots of leguminous plants. (d) Suckerfish attaches itself to the underside of sharks.D
  24. 24Consider the following statements: 1. Pyramid of numbers in a parasitic food chain is inverted. 2. Pyramid of biomass in a pond ecosystem is upright. 3. Pyramid of energy in a forest ecosystem is upright. Which of the statements given above is/are correct? (a) 1 only (b) 1 and 2 only (c) 1 and 3 only (d) 2 and 3 onlyC
  25. 25With reference to photochemical smog, consider the following statement: 1. It occurs mainly in warm, dry and sunny weather. 2. It results in the creation of ground level ozone. Which of the statement given above is/ are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2C
  26. 26Which among the following factors can lead to depletion of natural resources? 1. Indiscriminate use of natural resources 2. Overpopulation 3. Technological development Select the correct answer using the code given below. (a) 1 and 2 only (b) 3 only (c) 2 and 3 only (d) 1, 2 and 3D
  27. 27Which of the following coral reefs may be separated by a lagoon from the coastline? 1. Fringing Reef 2. Barrier Reef 3. Atoll Select the correct answer using the code given below. (a) 1 and 2 only (b) 2 only (c) 1 and 3 only (d) 1, 2 and 3A
  28. 28Katas, Kere and Tankas are (a) traditional solar heating systems. (b) traditional water harvesting systems. (c) traditional ways of mixed farming. (d) none of the aboveB
  29. 29Which of the following is/are effects of ozone depletion? 1. Genetic disorders 2. Disturbs ecological balance in acquatic life. 3. Brittling of plastic Select the correct answer using the code given below. (a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) 1, 2 and 3D
  30. 30With reference to biosphere reserves, consider the following statements: 1. The core zone consists of an undisturbed and legally protected ecosystem. 2. The buffer zone is the outermost zone of the biosphere reserve. Which of the statements given above is/are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2A
  31. 31Consider the following pairs: Type of Diversity Example 1. Species Diversity : Different strains of rice grown across India 2. Genetic Diversity : Greater number of amphibians in Western Ghats than Eastern Ghats 3. Ecological Diversity : Presence of Sunderbans mangroves, thar desert and coral Islands in India Which of the pairs given above is/are correctly matched? (a) 1 and 2 only (b) 2 and 3 only (c) 3 only (d) 1, 2 and 3C
  32. 32Arrange the following biosphere reserves of India from North to South: 1. Nanda Devi 2. Nilgiri 3. Panchmarhi 4. Agashthyamalai Select the correct answer using the code given below. (a) 2-1-3-4 (b) 1-3-4-2 (c) 1-3-2-4 (d) 3-1-2-4C
  33. 33Aquatic productivity depends upon which of the following factors? 1. Dissolved oxygen 2. Temperature 3. Sunlight 4. Organic matter Select the correct answer usingthe code given below. (a) 1, 2 and 3 only (b) 2, 3 and 4 only (c) 1 and 4 only (d) 1, 2, 3 and 4D
  34. 34With reference to the spring shock or acid shock, consider the following statements: 1. It leads to increase in the level of acidity of water bodies. 2. It is beneficial for freshwater species. 3. It is predominant in hot equatorial regions. Which of the statements given above is/are correct? (a) 1 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3A
  35. 35Consider the following statements about Biomagnification: 1. It refers to increase in concentration of the toxicant at successive trophic levels. 2. Both mercury and DDT are known to undergo biomagnification. Which of the statements given above is/are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2C
  36. 36Consider the following statements about Wildlife protection Act,1972: 1. It covers both plants and animals within its ambit. 2. National Parks and wildlife sanctuaries are set up under this act. 3. It aims to promote ex-situ conservation in zoological and botanical gardens. Which of the statements given above is/are correct? (a) 1 and 3 only (b) 2 only (c) 1 and 2 only (d) 1, 2 and 3D
  37. 37With reference to wind energy consider the following statements: 1. It is a non-polluting source of energy. 2. Wind farms can be located in coastal regions only. 3. India's wind energy programme is the largest in the world. Which of the statements given above is/are correct? (a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) 1, 2 and 3A
  38. 38Arrange the following gases in the increasing order of their greenhouse potential: 1. Carbon dioxide 2. Methane 3. Nitrous oxide 4. Chlorofluorocarbons Select the correct answer using the code given below. (a) 1-2-3-4 (b) 1-3-2-4 (c) 2-1-3-4 (d) 1-2-4-3A
  39. 39Which of the following statements regarding Eutrophication process is not correct? (a) Rate in the growth of algae increases. (b) Concentration of oxygen in the water bodies decreases. (c) Depletion of nutrients in the water bodies. (d) Penetration of sunlight is impeded.C
  40. 40'A major tourist attraction in Odisha, it is internationally acclaimed for its large collection of white tigers. It is also the first ever captive breeding centre of endangered species for creating awareness of wildlife.' Which of the following is referred in the above passage? (a) Nokrek Biosphere Reserve (b) Nandankanan Zoological Park (c) Bandhavgarh National Park (d) Periyar Wildlife SanctuaryB
  41. 41Which among the following conditions will increase the rate of decomposition? 1. Low temperature 2. High moisture content 3. High nitrogen content in detritus Select the correct answer using the code given below. (a) 1 and 2 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3C
  42. 42With reference to environment and ecology, the term Taungya system is associated with (a) artificial method of forest regeneration. (b) artificial cloud seeding mechanism. (c) traditional system of organic farming. (d) traditional system of micro irrigation.A
  43. 43Which of the following is/are the micronutrients required for plants? 1. Magnesium 2. Boron 3. Sulphur 4. Manganese Select the correct answer using the code given below. (a) 1 and 4 only (b) 1 and 3 only (c) 2 and 4 only (d) 1, 3 and 4 onlyC
  44. 44The term ecosystem refers to (a) place on Earth's surface where life dwells. (b) complex biotic community characterized by distinctive plant and animal species. (c) a group of organisms interacting among themselves and with environment. (d) None of the aboveC
  45. 45Which of the following are the causes for biodiversity loss? 1. Habitat loss and fragmentation. 2. Over-exploitation of natural resources. 3. Introduction of invasive alien species. Select the correct answer using the code given below. (a) 1 and 2 only (b) 1 only (c) 2 and 3 only (d) 1, 2 and 3D
  46. 46With reference to thermal pollution, consider the following statements: 1. The dissolved oxygen in water bodies decreases with increase in temperature. 2. Warm water facilitates growth of blue green algae in water bodies. Which of the statements given above is/are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2C
  47. 47Which of the following methods can be used to control air pollution from a thermal power plant? 1. Scrubber 2. Electrostatic precipitator 3. Particulate filter Select the correct answer using the code given below. (a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) 1, 2 and 3D
  48. 48With reference to secondary ecological succession, consider the following statements: 1. It occurs in areas where natural biotic communities have been destroyed. 2. It is faster than primary succesion. Which of the statements given above is/are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2C
  49. 49Which of the following is/are greenhouse gases? 1. Nitrogen 2. Methane 3. Chlorofluorocarbons (CFC) 4. Water vapour Select the correct answer using the code given below. (a) 1 and 3 only (b) 1, 2 and 4 only (c) 2, 3 and 4 only (d) 1, 2 and 3 onlyC
  50. 50Which of the following are the limitations of ecological pyramids? 1. It does not take into account the same species belonging to two or more trophic levels. 2. It does not accommodate a food web. 3. Saprophytes are not given any place in ecological pyramids Select the correct answer using the code given below. (a) 1 and 2 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3D
  51. 51Which of the following international protcols/conferences are related to ozone layer protection? 1. Vienna Conference 2. Kyoto Protocol 3. Montreal Protocol 4. Helsinki Conference Select the correct answer using the code given below. (a) 1, 2 and 3 only (b) 1, 3 and 4 only (c) 2 and 4 only (d) 1, 2, 3 and 4B
  52. 52Which of the following statements is/are correct regarding bioremediation? 1. These are biological measures to convert environment pollutants into harmless forms. 2. Vermicomposting is an example of bioremediation. Select the correct answer using code given below. (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2C
  53. 53Which of the following gases are responsible for causing acid rain? 1. Sulphur dioxide 2. Nitrogen dioxide 3. Carbon monoxide Select the correct answer using the code given below. (a) 1, 2 and 3 (b) 1 and 2 only (c) 1 and 3 only (d) 2 and 3 onlyB
  54. 54Consider the following statements: 1. Within biosphere, variations in annual temperature and precipitation account for the formation of biomes. 2. Regional and local variations within each biome leads to the formation of habitats. Which of the statements given above is/are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2C
  55. 55With reference to decomposers, consider the following statements: 1. They degrade the complex organic compounds into simple compounds. 2. They release organic substances for reuse by plants. 3. They regenerate ecosystem fertility by releasing nutrients. Which of the statements given above is/are correct? (a) 1, 2 and 3 (b) 2 and 3 only (c) 3 only (d) 1 and 2 onlyA
  56. 56Which among the following are adaptations by desert vegetation to survive in their habitat? 1. 1.Short and aerial roots 2. Small and waxy leaves 3. Opening of leaf pores only at night Select the correct answer using the code given below. (a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3B
  57. 57Which among the following biosphere reserves are included under UNESCO's World Network of Biosphere Reserves? 1. Gulf of Mannar 2. Sunderbans 3. Nilgiri Select the correct answer using the code given below. (a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) 1, 2 and 3D
  58. 58Which of the following pollutants are released by the motor vehicle exhaust? 1. Carbon monoxide 2. Hydrocarbons 3. Suspended particulate matter 4. Oxides of Nitrogen Select the correct answer using the code given below. (a) 1, 2 and 3 only (b) 3 and 4 only (c) 1 and 4 only (d) 1, 2, 3 and 4D
  59. 59Which of the following is/are the reasons for desertification? 1. Over cultivation 2. Unrestricted grazing 3. Deforestation 4. Poor irrigation practices Select the correct answer using the code given below. (a) 1, 2 and 3 only (b) 1, 2 and 4 only (c) 3 and 4 only (d) 1, 2, 3 and 4D
  60. 60'In a warm-blooded animal species having distinct geographic populations, the limbs, ears, and other appendages of the animals living in cold climates tend to be shorter than in animals of the same species living in warm climates.' Which ecological principle is defined in the above passage? (a) Bergmann's Rule (b) Allen's Rule (c) Gloger's Rule (d) Rensch's RuleB
  61. 61With reference to environment and ecology, the term ‘leachate’ refers to: (a) the loss of water-soluble plant nutrients from the soil, due to rain and irrigation. (b) the process of making renewable energy from solid waste. (c) a contaminated liquid that percolates downward through the solid waste material. (d) the process of enzymatic decomposition of organic matter.C
  62. 62Which among the following are primary air pollutants? 1. Smoke 2. Ozone 3. Peroxyacylnitrate (PAN) Select the correct answer using the code given below. (a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) 1, 2 and 3A
  63. 63With reference to decomposition, consider the following pairs: Process Characteristics 1. Fragmentation : Process of breaking down of detritus into smaller particles. 2. Mineralisation : Degradation of detritus into simpler inorganic substances by bacterial and fungal enzymes. 3. Leaching : Dissolution and seeping of water soluble nutrients in the soil. Which of the pairs given above is/are correctly matched? (a) 2 only (b) 1 and 2 only (c) 3 only (d) 1, 2 and 3D
  64. 64Which among the following are heterotrophs? 1. Consumers 2. Producers 3. Decomposers Select the correct answer using the code given below. (a) 1 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3B
  65. 65Which of the following are Ozone-Depleting Substances? 1. Chlorofluorocarbons (CFC) 2. Hydrofluorocarbons (HFC) 3. Carbon tetrachloride Select the correct answer from the code given below. (a) 1 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3B
  66. 66Which of the following statements is correct with regard to Green Manuring? (a) It is a type of crop cover grown for a specific period over soil. (b) Leguminous plants are usually grown as green manure. (c) It increase the percentage of organic matter in the soil. (d) statements (a), (b) & (c) are correct.D
  67. 67Which among the following are the prospective sites for generation of tidal energy in India? 1. Gulf of Cambay 2. Gulf of Kutch 3. Sunderban deltas Select the correct answer using the code given below. (a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) 1, 2 and 3D
  68. 68Atmospheric carbon dioxide acts as a greenhouse gas because 1. it traps the terrestrial infrared radiation. 2. it reduces atmospheric pressure. Select the correct answer using the code given below. (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2A
  69. 69Which of the following is/are the impacts of acid rain? 1. It inhibits the activity of nitrogen fixing bacteria. 2. It leads to leaching away of essential nutrients from soil. 3. It protects trees from pathogens and drought. Select the correct answer using the code given below. (a) 1 only (b) 2 and 3 only (c) 1 and 2 only (d) 1 and 3 onlyC
  70. 70In the context of processed food auramine, lead chromate and congo red are: (a) food colours (b) food preservatives (c) mulsifiers (d) artificial sweetenersA
  71. 71'It is the maintainence of a relatively constant internal environment of an organism, that permits all biochemical reactions and physiological functions to proceed with maximal efficiency and thus enhance overall fitness of the species.' Which of the following processes is best described in the above passage? (a) Homeostasis (b) Hibernation (c) Osmoregulation (d) ThermoregulationA
  72. 72Which of the following is/are marine resources? 1. Phytoplankton 2. Petroleum 3. Sea grass Select the correct answer using the code given below. (a) 1, 2 and 3 (b) 2 and 3 only (c) 1 and 2 only (d) 3 onlyA
  73. 73With reference to Agenda 21, consider the following statements: 1. It is an action plan to encourage sustainable development through harmonisation of social, economic and environmental uses. 2. It was adopted at the Stockholm conference, 1972. Which of the statements given above is/are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2A
  74. 74Which of the following is/are the consequences of Jhuming or Shifting Cultivation? 1. Decline in the forest cover 2. Higher crop productivity 3. Higher soil fertility Select the correct answer using the code given below. (a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) 1, 2 and 3A
  75. 75With reference to Biochemical Oxygen Demand (BOD), consider the following statement: 1. It is amount of oxygen required by bacteria to break down the organic matter present in a water body. 2. Lower the BOD, higher is the water pollution. Which of the statement given above is/are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2A
  76. 76Which of the following can be the causes for land degradation? 1. Deforestation 2. Mining 3. Farming 4. Landslides Select the correct answer using the code given below. (a) 1, 2 and 3 only (b) 1 and 4 only (c) 2, 3 and 4 only (d) 1, 2, 3 and 4D
  77. 77With reference to species interactions, the term Antibiosis refers to (a) production of secretions by an organism which is harmful to others. (b) an interaction where one organism derives nourishment from another organism. (c) conflict between organisms of two different species for a limited essential resource. (d) an interaction where one species benefits and the other remains unaffected.A
  78. 78Which of the following are considered a part of Agro-forestry? 1. Agricultural crops 2. Forest crops 3. Animal rearing Select the correct answer using code given below. (a) 1, 2 and 3 (b) 1 and 2 only (c) 2 and 3 only (d) 1 and 3 onlyA
  79. 79With reference to biodivesity hotspots, consider the following statements: 1. These are the areas with very high levels of species richness and high degree of endemism. 2. Western ghats are the only biodiversity hotspots in India. Select the correct answer using the code given below. (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2A
  80. 80Which of the following best defines the gradual change in certain characteristics exhibited by communities along with gradual change in one or more environmental gradients? (a) Ecotone (b) Ecotype (c) Ecocline (d) Ecological NicheC
  81. 81With reference to water harvesting, consider the following statements: 1. Water harvesting potential is the total amount of water received in the form of rainfall over an area. 2. Run-off, spillage and evaporation decrease the water harvesting potential. Which of the statements given above is/are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2B
  82. 82'Sedimentary cycles are those biogeochemical cycles which have earth's crust as the main storage area for their elements'. Which among the following cycles are sedimentary cycles? 1. Phosphorous cycle 2. Nitrogen cycle 3. Oxygen cycle 4. Carbon cycle Select the correct answer using the code given below. (a) 1 only (b) 2 and 3 only (c) 2 and 4 only (d) 1, 2, 3 and 4A
  83. 83Which among the following is a site for the ex-situ method of biodiversity conservation? 1. Botanical garden 2. Zoo 3. National Park Select the correct answer using the code given below. (a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) 1, 2 and 3B
  84. 84With reference to an aquatic ecosystems, consider the following pairs: Components Species 1. Autotrophs : Algae 2. Consumers : Phytoplankton 3. Decomposers : Fungi Which of the pairs given above is/are correctly matched? (a) 1 and 3 only (b) 2 only (c) 2 and 3 only (d) 1, 2 and 3A
  85. 85Which of the following conditions are necessary for the generation of hydroelectricity? 1. Presence of an upland region 2. Water to be free from silt 3. Perennial source of water Select the correct answer using the code given below. (a) 1, 2 and 3 (b) 1 and 3 only (c) 2 and 3 only (d) 1 and 2 onlyA
  86. 86With reference to ecology, the term denitrification refers to (a) secretion of nitrites by insectivorous plants to attract prey. (b) conversion of nitrates to ammonia or nitrogen by microorganisms. (c) deficiency of nitrites in plant result into yellowing of leaf. (d) drastic decrease of nitrogen-fixing bacteria in root nodules of leguminous plants.B
  87. 87Which of the following sources contains the highest amount of fresh water? (a) Glaciers (b) Lakes (c) Streams (d) Ground waterA
  88. 88Consider the following pairs: Food product Adulterant 1. Mustard oil : Argemone oil 2. Turmeric : Metanil yellow 3. Black pepper : Papaya seeds Which of the pairs given above is/are correctly matched? (a) 1 and 3 only (b) 2 only (c) 1 and 2 only (d) 1, 2 and 3D
  89. 89Consider the following statements regarding CITES convention: 1. It aims at in-situ conservation of wild animals and plants. 2. It is legally binding on the parties to the Convention. 3. It was recently adopted at the Paris climate conference. Which of the statements given above is/are correct? (a) 1 and 3 only (b) 2 only (c) 1 and 2 only (d) 1, 2 and 3B
  90. 90Arrange the following organisms of a grazing web food chain according to their trophic levels in ascending order. 1. Frog 2. Snake 3. Butterfly 4. Hawk Select the correct answer using the code given below. (a) 3-1-2-4 (b) 3-2-1-4 (c) 4-1-2-3 (d) 4-2-1-3A
  91. 91Which among the following are the effects of soil pollution? 1. Contamination of crops by radioactive elements. 2. Reduction in fertility and productivity of the soil. 3. Reduction in microrganisms present in the soil. Select the correct answer using the code given below. (a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) 1, 2 and 3D
  92. 92Consider the following statements regarding the primary productivity in ecosystems: 1. It is defined as the rate of formation of new organic matter by decomposers. 2. It depends on the plant species inhabiting a particular area. Which of the statements given above is/are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2B
  93. 93With reference to coal, consider the following statements: 1. Peat consists of 90 percent carbon and has high energy value. 2. Bituminous coal has very low energy value and is ideal for domestic use. Which of the statements given above is/are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2D
  94. 94Which of the following statements are correct regarding the growth of corals in the oceans? 1. They thrive in tropical oceans confined between 250 N and 250 S latitudes. 2. They require high mean annual temperature above 200C for their survival. 3. They can survive above the sea level. Select the correct answer using the code given below. (a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3A
  95. 95Which of the following are bio-degradable wastes? 1. Stale food 2. Glass bottles 3. Dry leaves 4. Scrap metals Select the correct answer using the code given below. (a) 1, 2 and 3 only (b) 2, 3 and 4 only (c) 1 and 3 only (d) 2 and 4 onlyC
  96. 96With reference to ecology, the term silviculture refers to (a) the use of organisms to neutralize pollutants from a contaminated site. (b) the process by which the nutritional quality of food crops is improved through biotechnology. (c) the practice of growing and cultivation of trees. (d) the breeding, rearing, and transplantation of fish by artificial means.C
  97. 97Which among the following can produce Carbon Dioxide (CO2) during a carbon cycle? 1. Oxidation by bacteria 2. Photosynthesis by green plants 3. Respiration by animals Select the correct answer using the code given below. (a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3C
  98. 98With reference to a detritus food chain, consider the following statements: 1. Primary consumers in a detritus food chain are herbivores. 2. A detritus food chain always exists independent of a grazing food chain. Which of the statements given above is/are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2D
  99. 99Consider the following statements regarding Compressed Natural Gas (CNG): 1. It is mainly composed of methane gas. 2. It is lighter than air. 3. CNG vehicles do not emit nitrous oxide. Which of the statements given above is/are correct? (a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) 1, 2 and 3B
  100. 100Which among the following is/are the advantages of mulching? 1. Prevent soil erosion 2. Addition of organic matter to the soil 3. Reduce weed growth Select the correct answer using the code given below. (a) 1 and 3 only (b) 2 only (c) 1 and 2 only (d) 1, 2 and 3D

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Flashcards on Untitled, created by daisy flower on 07/04/2018.
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