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Multiple Choice Questions on Ecology and Ecosystem

Multiple choice questions on ecology and ecosystem can help students evaluate their knowledge of ecology and environment. Answers are also given for MCQ on ecology and environment to help you remember. Try our Multiple choice questions on ecology and ecosystem to see if you can get all the answers right for the questions below.

Multiple Choice Questions on Ecology and Ecosystem

Environment Ecology is a branch of science that includes human science, population science, community science, ecosystem science, and biosphere science. 

MCQ on Ecology and Environment

1. The term ecology was introduced by

  1. Haeckel
  2. Odum
  3. Tansely
  4. Ramdeo Mishra

2. Interactions between living and non-living organisms and environment is called

  1. Ecosystem
  2. Ecology
  3. Phyto-geography
  4.  Phytosociology

3. An ecosystem consist of

  1. Green plants and animals
  2. Green plants and decomposers
  3. Producers and consumers
  4. Green plants, animals, decomposers and abiotic environment

4. The environment which has been modified by human activities is called

  1. Natural environment
  2. Anthropogenic environment
  3. Modem environment
  4. Urban environment

5. Driving force in an ecosystem is

  1. Plants Producers
  2. Solar energy
  3. Biomass energy
  4. Nuclear energy

6. Which one of the following is an abiotic component of the ecosystem?

  1. Bacteria
  2. Plants
  3. Humus
  4. Fungi

7. Which of the following is a possible producer in an ecosystem?

  1. Plants
  2. Animals
  3. Human beings
  4. Fish

8. Organisms feed on dead organisms and excreta of living organisms are known

  1. Decomposers
  2. Consumers
  3. Producers
  4. Carnivores

9. The food chain in which microorganisms breakdown dead producers is called:

  1. Consumer food chain
  2. Predator food chain
  3. Parasitic food chain
  4. Detritus food chain

10. In a food chain animals constitute the

  1. First trophic level
  2. Second trophic level
  3. Intermediate trophic level
  4. Ultimate trophic level

11. Food chain starts with

  1. Producer
  2. Herbivores
  3. Carnivores
  4. Omnivores

12. In a food chain, humans are

  1. Secondary consumers
  2. Primary consumer
  3. Producers
  4. Primary and secondary consumers

13. Which one is the correct food chain?

  1. Phytoplankton —» Zooplankton —» Fish
  2. Zooplankton —» Phytoplankton —» Fish
  3. Zooplankton —» Protozoans —» Fish
  4. Grass —» Fish —» Zooplankton

14. A food web consists of

  1. Interlocking food chains
  2. Producers, consumers and decomposers
  3. A portion of a food chain
  4. A set of similar consumers

15. Food webs are

  1. One kind of food
  2. Not related to food chains at all
  3. Inter-connected arrangement of food chains
  4. Linear arrangement of food chains

Answer Key

  1. Haeckel
  2. Ecology
  3. Green plants, animals, decomposers and abiotic environment
  4. Anthropogenic environment
  5.  Solar energy
  6. Humus
  7. Plants
  8. Decomposers
  9. Detritus food chain
  10. Intermediate trophic level
  11. Producer
  12. Primary and secondary consumers
  13. Phytoplankton —» Zooplankton —» Fish
  14. Interlocking food chains
  15. Inter-connected arrangement of food chains

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