246. 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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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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247. 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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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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248. In your opinion, which is the most effective way to conserve the plant diversity of an area ?

1. 1. By creating biosphere reserve

   
   
   

   2. By creating botanical gardens

   
   
   

   3. By developing seed bank

   
   
   

   4. By tissue culture method

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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249. Which one of the following is a pair of endangered species ?

1. 1. Garden lizard and Maxican poppy

   
   
   

   2. Rhesus monkey and Sal tree

   
   
   

   3. Indian peacock and Carrot grass

   
   
   

   4. Hornbnill and Indian Aconite

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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250. Which of the following lists include only abiotic environmental factors ?

1. 1. Food, temperature, fire, wind

   
   
   

   2. Soil minerals, oxygen level, light, predators

   
   
   

   3. Wind, rainfall, temperature, soil minerals

   
   
   

   4. Light, food, predators, competitors

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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