11. Atomospheric ozone layer which protect us from UV-B & C is getting depleted most by addition of

1. 1. Chloro flurocarbon

   
   
   

   2. Carbon monoxide

   
   
   

   3. Carbon dioxide

   
   
   

   4. Sulphur dioxide

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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12. Insectivorous plant generally grow in soil which is deficient in

1. 1. Water

   
   
   

   2. Nitrogen

   
   
   

   3. Potassium

   
   
   

   4. Calcium

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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13. A one-way relationship where one species benefits at the expense of another is called .................

1. 1. Commensalism

   
   
   

   2. Competative exclusion

   
   
   

   3. Parasitism

   
   
   

   4. An obligatory relationship

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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14. A symbiotic relationship in which both species benefit is best described as ..............

1. 1. Commensalism

   
   
   

   2. Competative exclusion

   
   
   

   3. Mutualism

   
   
   

   4. Parasitism

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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15. The biome concept illustrates

1. 1. Dominant plant communities

   
   
   

   2. Insect populations

   
   
   

   3. Old field succession

   
   
   

   4. Animal diversity

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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