Ecosystem Quiz - CBSE Class 11 Biology

Free practice quiz: Ecosystem (CBSE Class 11 Biology). 38 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is an ecosystem?

   1. A community of living organisms and their physical environment
   2. Only the living organisms in a particular area
   3. The abiotic components of the environment
   4. A group of similar species
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   Answer: A. A community of living organisms and their physical environment

2. What is the primary difference between a food chain and a food web?

   1. A food chain is simpler and shows one path of energy flow
   2. A food chain includes producers and consumers only
   3. A food web is shorter than a food chain
   4. There is no difference
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   Answer: A. A food chain is simpler and shows one path of energy flow

3. Which of the following is a result of climate change affecting ecosystems?

   1. Increased photosynthesis in all plants
   2. Changes in species distributions
   3. Uniformity of ecosystems
   4. Stability in food webs
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   Answer: B. Changes in species distributions

4. What is the main source of energy for almost all ecosystems on Earth?

   1. Wind
   2. Water
   3. Sunlight
   4. Soil
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   Answer: C. Sunlight

5. Which type of succession occurs on previously inhabited regions after a disturbance?

   1. Primary succession
   2. Secondary succession
   3. Climatic succession
   4. Geological succession
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   Answer: B. Secondary succession

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