101. 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

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102. 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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103. The "Red Data books" published by the International Union for Conservation of Nature and Natural Resources (IUCN) contain lists of
     1. Endemic plant and animal species present in the biodiversity hotspots.
     2. Threatened plant and animal species.
     3. Protected sited for conservation of nature and natural resource in various countries.
     Select the correct answer using the codes given below

1. 1. 1 and 3

   
   
   

   2. 2 only

   
   
   

   3. 2 and 3

   
   
   

   4. 3 only

   
   
   

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   NA

   Correct Option: B

   NA

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104. All the populations of different species that occupy and are adapted to a given area, are referred to as a(n).................

1. 1. Ecosystem

   
   
   

   2. Community

   
   
   

   3. Biosphere

   
   
   

   4. Niche

   
   
   

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   NA

   Correct Option: B

   NA

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105. An organism's "trophic" level refers to ................

1. 1. The rate of which it uses energy

   
   
   

   2. Where it lives

   
   
   

   3. What is eats

   
   
   

   4. Whether it is early or late in ecological succession

   
   
   

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   NA

   Correct Option: C

   NA

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