Botany - Environmental Issues Three Marks Questions

12th Standard EM

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Biology

Time : 00:45:00 Hrs
Total Marks : 30
    10 x 3 = 30
  1. How do forests help in maintaining the climate?

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

  3. Which one gas is most abundant out of the four commonest greenhouse gases? Discuss the effect of this gas on the growth of plants?

  4. List out the effects of global warming.

  5. Mention any three sources of carbon dioxide emission.

  6. Ozone acts as a natural sunscreen - Justify.

  7. Give a detailed account on clean development mechanism.

  8. Prosopis juliflora, though an alien invasive species to India, it is beneficial to certain extent. Give reason.

  9. Give a.brief account on In-situ conservation

  10. What do you mean by Biochar? How it helps the environment?

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