Environmental Studies MCQ Questions and Answers Quiz

11. Deforestation generally decreases

  1. Rainfall
  2. Soil erosion
  3. Draught
  4. Global warming

12. Detritus food chain starts from

  1. Green plants
  2. Grass
  3. Dead organic matter
  4. Phytoplankton

13. Earthworms and bacteria are called

  1. Producers
  2. Consumers
  3. Decomposers
  4. None of these

14. 5th June is observed as

  1. World forest day
  2. World environment day
  3. World wildlife day
  4. World population day

15. Eutrophication means

  1. thermal change in water
  2. filling up of water body with aquatic due to extra nourishment
  3. solid waste
  4. none of the above

16. Example of omnivores is

  1. Lion
  2. Hawk
  3. Human
  4. Snake

17. Food chain always starts with

  1. Respiration
  2. Transpiration
  3. Nitrogen fixation
  4. Photosynthesis

18. Formation of ozone is

  1. oxidation reaction
  2. oxidation reaction
  3. photochemical reaction
  4. photochemical reaction

19. Hydrosphere includes

  1. Animals
  2. Soil
  3. Plants
  4. Water bodies

20. Important abiotic factors in ecosystems include which of the following?

  1. temperature
  2. water
  3. wind
  4. all of the above
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