26. With which one of the following is the term 'Maitri' associated ?

1. 1. HYV of rice

   
   
   

   2. SAARC

   
   
   

   3. Indo-Russian Treaty

   
   
   

   4. Anatarctica Research Centre

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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27. Eutrophication of lakes is a consequential effect of the accumulation of

1. 1. silt load

   
   
   

   2. sewage

   
   
   

   3. nitrates and phosphates

   
   
   

   4. vegetation

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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28. Storage of energy in an ecosystem is shown by the amount of living material present in both plants and animals. This is called

1. 1. Trophic level

   
   
   

   2. Standing crop

   
   
   

   3. Food chain

   
   
   

   4. Food web

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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29. Which one the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms ?

1. 1. Ecotone

   
   
   

   2. Ecological niche

   
   
   

   3. Habitat

   
   
   

   4. Home range

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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30. The endangered Ridley turtles have the world's largest aggregation

1. 1. Gahirmatha

   
   
   

   2. Sagarmatha

   
   
   

   3. Lakshadweep islands

   
   
   

   4. Andaman and Nicobar group of islands

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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