81. Biodiversity hotspots in India are
    1. Eastern Ghat
    2. Eastern Himalayas
    3. Andaman and Nicobar islands
    4. Western Ghat
    Codes

1. 1. 1, 2

   
   
   

   2. 2, 3, 4

   
   
   

   3. 2, 3

   
   
   

   4. 2, 4

   
   
   

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   NA

   Correct Option: D

   NA

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82. Along a food chain, the role of .............is to help return or recycle the primary chemical compounds of organisms back to the chain : carbon, hydrogen, nitrogen, and other minor compounds.

1. 1. Decomposers (bacteria, fungus)

   
   
   

   2. Consumers (lions, tigers)

   
   
   

   3. Prey (deer, water buffaloes)

   
   
   

   4. Producers (plants, trees)

   
   
   

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   NA

   Correct Option: A

   NA

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83. Which of the following is an example of secondary succession ?

1. 1. Appearance of mosses and weeds on an exposed rock fence

   
   
   

   2. Abandoned farm field covered with weeds and shrubs.

   
   
   

   3. Former pond now supporting growth of shrubs and trees

   
   
   

   4. Establishment of plants on a newly-formed island

   
   
   

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   NA

   Correct Option: B

   NA

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84. Regarding "carbon credits", which one of the following statements is not correct ?

1. 1. The carbon credit system was ratified in conjunction with the Kyoto Protocol

   
   
   

   2. Carbon credits are awarded to countries or groups that have reduced greenhouse gases below their emission quota

   
   
   

   3. The goal of the carbon credit system is to limit the increase of carbon dioxide emission

   
   
   

   4. Carbon credits are traded at a price fixed from time to time by the United Nations Environment Programme

   
   
   

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   NA

   Correct Option: D

   NA

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85. Which of the following affects biodiversity

1. 1. Climate change

   
   
   

   2. Ocean acidification

   
   
   

   3. Environmental pollution

   
   
   

   4. All of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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