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Botany - Environmental Issues Model Question Paper

12th Standard EM

    Reg.No. :


Time : 01:30:00 Hrs
Total Marks : 40
    6 x 1 = 6
  1. Which of the following would most likely help to slow down the greenhouse effect.


    Converting tropical forests into grazing land for cattle.


    Ensuring that all excess paper packaging is buried to ashes.


    Redesigning landfill dumps to allow methane to be collected.


    Promoting the use of private rather than public transport.

  2. Deforestation means


    growing plants and trees in an area where there is no forest


    growing plants and trees in an area where the forest is removed


    growing plants and trees in a pond


    Removal of plants and trees

  3. People’s movement for the protection of environment in Sirsi of Karnataka is


    Chipko movement


    Amirtha Devi Bishwas movement


    Appiko movement


    None of the above

  4. The plants which are grown in silivpasture system are


    Sesbania and Acacia


    Solenum and Crotalaria


    Clitoria and Begonia


    Teak and sandal

  5. Which is not a greenhouse gas?









  6. Methane is ________________ times as effective as CO2 at trapping heat.









  7. 5 x 1 = 5
  8. Baccaurea courtallensis

  9. (1)

    Northern India

  10. Hardwickia binata

  11. (2)

    Southern Western Ghats

  12. Nepenthes khasiyana

  13. (3)

    Khasi Hills

  14. Invasive species

  15. (4)


  16. Phytoindicator

  17. (5)


    7 x 2 = 14
  18. What is ozone hole?

  19. Expand CCS.

  20. Define global warming.

  21. What is Dobson unit?

  22. Define social forestry.

  23. Distinguish between In-situ conservation and Ex-situ conservation.

  24. What is carbon sequestration?

  25. 5 x 3 = 15
  26. How do forests help in maintaining the climate?

  27. How do sacred groves help in the conservation of biodiversity?

  28. List out the effects of global warming.

  29. Mention any three sources of carbon dioxide emission.

  30. Explain the role of lakes in an ecosystem.


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