216. 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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217. All of the organisms living in a particular area make up ....................

1. 1. A food chain

   
   
   

   2. A population

   
   
   

   3. A biological community

   
   
   

   4. A biosphere

   
   
   

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   NA

   Correct Option: C

   NA

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218. 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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219. A lichen is actually composed of two organisms-a fungus and an algae. They depend on each other for survival. The most specific term that describes their relationship is ..................

1. 1. Parasitism

   
   
   

   2. Mutualism

   
   
   

   3. Commensalism

   
   
   

   4. Symbiosis

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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220. The term used for the conservation of ecosystems and natural habitats and the maintenance and recovery of viable populations of species in their natural surronudings is

1. 1. Core conservation

   
   
   

   2. In-situ conservation

   
   
   

   3. Ex-situ conservation

   
   
   

   4. Peripheral conservation

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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