Answer Key of ENVIRONMENTAL STUDIES Question Bank, Calicut University

Note: Answers are shown in BOLD letters

1. The phenomenon of occurrence of additional species found in the

ecotone or transitional zone between adjoining ecosystems is known as

------------------

a) Edge effect b) Root effect c) Raman effect

2. The complex network of interconnected food chains is called

---------------------

a) Trophic level b) Food web c) Ecological pyramid

3. Each organism in an ecosystem is at a specific feeding stage called as

the ----

a) Climax level b) Producer level c) Trophic level

4. The area to which a species is biologically adapted to live is known

as--------------

a) Niche b) Habitat c) Succession

5. Official date of Earth Day is on ---------------------------------------------

a) April 22 b) March 21 c) May 22

6. All forms of water that comes down on Earth, including rain, show, hail

etc. is

known as------------------

a) Calcification b) Fixation c) Precipitation

7. The forests in the Arctic are called --------------------------

a) Savanna b) Tundra c) Prairies

8. The ocean cover ----------------------- percentage of Earth’s surface.

a) 51 % b) 61 % c) 71 %

9. The salt-tolerant trees growing in shallow marine sediment or estuaries

known

as---------

a) Mangroves b) Xerophytes c) Epiphytes

10. The largest brackish water lake situated in Asia is in Orissa. Which is the

lake ?

a) Chilka lake b) Vembanad lake c) Woolar lake

11. Ramsar Convention refers to the conservation of ----------------------------

a) Deserts b) Wetlands c) Agriculture lands

12. The World Wetlands Day is celebrated on -----------------------

a) February 02 b) February 28 c) June 05

13. National Maritime Day of India is celebrated on -----------------------

a) October 16 b) April 05 c) March 21

14. The animal which consumes decaying organic matter is

----------------------------

a) Carnivore b) Detrivore c) Herbivore

15. Ganga Action Plan in India was launched in the year -------------------

a) 1988 b) 1985 c) 1980

16. What is the name of the action plan for sustainable development in the

twenty

first century framed in the Rio Declaration on Environment &

Development

(1992) ?

a) Action 21 b) Agenda 21 c) Rio 21

17. A set of organisms that resemble one another in appearance and

behaviour is

called a -----------------------------

a) Exons b) Prions c) Species

18. The area where all the living organisms interact with each other and

their

environment is ----------------

a) biosphere b) exosphere c) mesosphere

19. An ecosystem gradually merges with an adjoining one through a

transitional

zone called the --------------------

a) ecological niche b) ecological footprint c) ecotone

20. Green revolution is associated with ---------------

a) sericulture b) agriculture c) fish culture

21. The first protected area in India is --------------------------

a) Silent valley b) Corbett National Park c) Bandipur sanctuary

22. The Indian Parliament passed the Biodiversity Bill in the year

a) 2000 b) 2005 c) 2002

23. World Water Day is celebrated on ----------------------

a) May 22 b) June 05 c) March 22

24. The components of LPG are ----------------------------

a) Methane & Hexane b) Propane & Butane c) Ethane & Methane

25. Which chemical was responsible for Bhopal gas tragedy?

a) Methyl Iso Cyanate b) Benzene Hexa Chloride c) Tri Nitro Toluene

26. Major consumer of wood from forest is -----------------------------

a) Thermal Power Plantb) Paper Industryc) Chemistry Industry

27. Green Revolution in India was initiated by --------------------------

a) M.S.Swaminathan b) Sunderlal Bahugana c) Kurien

28. The Unit of measurement of intensity of sound is in ---------------------

a) decibels b) lux c) parsec

29. A combination of smoke, fog and chemical pollutants seen in

industrialized

cities is known as ------------------

a) Sol b) Smog c) Fallout

30. Enrichment of water body by nutrients like phosphorus and nitrogen is

called

a) Succession b) Eutrophicationc) Stratification

31. The violent tropical storms in the Indian Ocean are known as

------------------

a) Typhoon b) Cyclones c) Hurricane

32. The worst nuclear accident happened to date is occurred at

-------------------------

a) Chernobyl in 1986

b) Three Mile Power Plant in 1979

c) Sellafield in 1957

33. Major cause of Ozone depletion is due to which chemical ?

a) Chlorofluorocarbons b) Polyphenols c) Dioxins

34. The legally binding international agreement to reduce Greenhouse

gases by

5 % 2012 is ----------------

a) Vienna convention b) Montreal Protocol c) Kyoto Protocol

35. The portion of the earth and its environment which can support life is

known as

a) Crust b) Biosphere c) Exosphere

36. Public awareness of environment creates ----------------------

a) Environment protection b) Environment degradation

c) Environmental improvement c) Environmental cultivation

37. Salim Ali centre for ornithology and history is located at

----------------------

a) Pune b) Hyderabad c) Kerala d) Coimbatore

38. Wild life protection act was formulated during the period of

------------------

a) Mrs. Indira Gandhi b) Lal Bahadur Shasthri

c) Rajiv Gandhi c) Morarji Desai

39. What is troposphere?

a) Portion of air b) Portion of water

c) Lowest layer of atmosphere where we survive d) Portion of sky

40. How is the atmosphere, hydrosphere and lithosphere connected ?

a) Hydrological cycle b) Nitrogen cycle

c) Oxygen cycle d) Carbon cycle

41. The main energy source for the environment is ----------------

a) Solar energy b) Chemical energy

c) Bioelectric energy c) Electrical energy

42. What is the meaning of the word “endemic”

a) Rare and occur only in a few location

b) Rare and occur everywhere

c) Abundant and seen everywhere

d) Abundant and only in few locations

43. Which gas is likely to be reduced in the atmosphere by deforestation?

a) Carbon dioxide b) Nitrogenc) Oxygen

44. What are rodenticides ?

a) that kill fishes b) that kill insects

c) that kill rats d) that kill crocos

45. Which of the following enhances soil fertility ?

a) Crop rotation b) Improved methods of agriculture

c) Using new seed verities d) Irrigation

46. Salinization is -------------------------

a) Accumulation of salts in water

b) Accumulation of salts in food

c) Accumulation of salts in body animals

d) Accumulation of salts in animals

47. What is oil slick ?

a) Boiled oil b) Cooled oil

c) Thin film of oil in sea water d) Oil in deep sea

48. Cigarette smoking exposes one to ---------------

a) Sulphur dioxide b) Carbon dioxide

c) Nitrogen peroxide d) Carbon monoxide

49. “Ozone Hole” is a ------------------------

a) Hole in the atmosphere b) Destruction of ozone layer

c) Hole in hydrosphere

50. Euro II standard refers to ---------------------

a) Lowering sulfur content in fuel b) Increasing sulfur content in fuel

c) Lowering carbon content in fuel

51. Noise is ---------------------

a) Huge sound b) Sound of vehicles

c) Undesirable and unwanted sound d) Sound of crackers

52. What is ‘temporary threshold shift’ ?

a) Hearing loss due to excessive noise b) Noise that is

untolerable

c) Tolerable noise

53. Acid is an example of --------------------------

a) Corrosive waste b) Infectious waste

c) Radioactive waste d) Ignitable waste

54. Vermi composting is a natural method of

a) Producing compost manure b) Producing worms

c) Managing waste it creates d) Destroying worms

55. The intensity of earthquake is measured in --------------------

a) Beaufort scale b) Richter scale c) Mohs scale

56. Which of the below is most responsible for world water crisis ?

a) Dams b) Floods c) Drought d) Population growth

57. Phagotropic mode of nutrition is found in ---------------------

a) Productsb) consumers c) decomposers d) all of these

58. Energy is returned to the atmosphere in the form of

a) potential energy b) metabolic energy

c) heat d) vapours

59. The conversion of ammonia to nitrate is known as -------------------------

a) ammonification b) nitrification

c) denitrification d) all of these

60. The study of individual organism is known as

a) syn ecology b) population ecology

c) autecology d) human ecology

61. The resources that can be replaced by natural ecological cycle is called

a) renewable b) non-renewable

c) exhaustible d) natural

62. Natural earthquakes are caused by --------------

a) earth’s crust b) deep seas

c) peak mountains d) forests

63. Any unfavorable alteration of the environment may be called as

a) eutrophication b) environment pollution

c) biomagnigication c) bioaccumulation

64. The presence of solid, liquid or gaseous compounds, which may not be

normally present, or in excess concentration in the atmosphere is

called

a) air pollution b) water pollution

c) soil pollution d) radioactive pollution

65. The place where the river meets the sea is called

a) estuaries b) oceans

c) lake d) wetlands

66. The historical monument that is affected by acid rain is

a) Taj Mahal b) Pyramid of Egypt

c) Pisa Tower d) Golden Temple

67. The expansion on POLI is

a) physical quality of life index

b) population quotient of life in India

c) poor quality of life in India

d) poverty, quality of life in India

68. The presence of which is necessary for photosynthesis

a) Chloroform b) Chlorophyll

c) Phosphorus d) Polymer

69. The Primary Consumers are also called as

6

a) Herbivores b) Carnivores

c) Enzymes d) None of these

70. Forest is an example of

a) Marine ecosystem b) Limnic ecosystem

c) Artificial Ecosystem d) Terrestial Ecosystem

71. The amount of solar radiation reaching the surface of the earth is called

a) Solar flux b) reflected light

c) minerals c) solvents

72. Snake is an example of

a) Primary Carnivores b) Secondary Carnivores

c) Herbivores d) None of these

73. The forests which occur in law rain fall area is

a) Evergreen forests ` b) deciduous forests

c) Coniferous forests d) all the above

74. All the genes of a population is called

a) gene poll b) gene

c) ecosystem d) population

75. The destruction of habitat of plants and animals is called

a) endemism b) endangered species

c) habitant loss d) flood

76. Zoos are examples for

a) insitu conservation b) in vivo conservation

c) exsitu conservation d) exvivo conservation

77. Acid rain contains

a) Sulphuric acid b) Hydrochloric acid

c) Oxalic acid d) Acetic acid

78. Organ affected by pneumonia

a) Liver b) Kidney

c) Heart d) Lungs

79. Which year was declared as the ‘Water Year’ by Indian

government

a) 2010 b) 2004

c) 2007 d) 2000

80. In which Indian state is Corbet National park located

a) Madya Pradesh b) Uttarakhand

c) Kerala d) Tamilnadu

81. Who wrote the book ‘Violence of Green Revolution’

a) Vandana Siva b) Sheela Dikshit

c) Menaka Gandhi d) Arundhathi Roy

82. The first national park of Kerala

a) Aralam b) Kottayam

c) Idukki d) Iravikulam

83. In which year was ‘Project Tiger’ launched?

a) 1973 b) 1964

c) 1998 d) 1970

84. The biggest award for environmental activities in India is given in

the

name of an individual. In whose name is it constituted?

a) Lal Bahadur Shasthri b) Morarji Desai

c) Indira Gandhi d) Kamaraj

85. On which date was the Stockholm Conference on Human

Environment

held ?

a) July 6th 1974 b) Aug 8th 1976

c) June 5th 1972 d) Dec 12th 1990

86. Where was the Stockholm conference on Human Environment held ?

a) Sweden b) Austria

c) India d) Greece

87. World Earth Day is observed on

a) May 24 b) July 5

c) Aug 2 d) April 22

88. The controversial dam across the river Narmada ?

a) Sardar Sarovar b) Hirakud

c) Bhakranangal d) Sutlej

89. Leader of ‘Narmada Bachao Andolan’

a) Vandana Siva b) Medha Patkar

b) Menaka Gandhi d) Mayilamma

90. Most abundant noble gas of the atmosphere is

8

a) Neon b) Xenon

c) Argon d) Krypton

91. The most harmful of ultraviolet radiations are

a) UV-C b) UV-B

b) UV-A d) All the above

92. The soil with poorest water holding capacity is

a) Clay b) Loam

c) Sandy d) None of the above

93. Formation of soil takes place by

a) Weathering b) Pedogenesis

c) Melting d) Both A and B

94. Favorable morphological and physiological response to a change in

environment is called

a) Preadaptation b) Ecotyping

c) Formation of ecophenes d) Accilimatisation

95. Plants adapted to open, sunny habitats are

a) Sciophytes b) Heliophytes

c) Mesophytes d) Epiphytes

96. Plants growing under shade are

a) Epipytes b) Semi-epiphytes

c) Mesophytes d) Sciophytes

97. Study of inter-relationship between organisms and their environment

is

a) Ecology b) Ecosystem

c) Phytogeography d) Ethology

98. Who among is a famous plant ecologist of India ?

a) Charles Darwin b) Ramdeva Misra

c) Birbal Sahani d) Jagdish Chandra Bose

99. Grassland of USA is referred to as

a) Praires b) Steppes

c) Pampas d) Veldts

100. Deserts occur in area of

a) Adverse human disturbance b) Underground saline water

c) Little underground water d) Rain shadow