Biological diversity

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Biological diversity by Fatima Khair

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Biological diversity

  1. 1.  Presented By : Fatima Khair Subject : Science Standard : VIII Topic : Biological Diversity K.J.Somaiya Comprehensive college of Education,Training and Research
  2. 5. <ul><li>Meaning </li></ul><ul><li>Loss of biodiversity </li></ul><ul><li>Conservation of biodiversity </li></ul>Content
  3. 6. <ul><li>Biodiversity is the great variety of species that exist on the earth </li></ul>Meaning:
  4. 7. <ul><li>All the species are interdependent on each other </li></ul>Why is biodiversity important?
  5. 8. <ul><li>Loss of a single species can begin a chain reaction of destruction </li></ul>
  6. 9. <ul><li>Contributes to 8% of total number of Species i.e 1.75 million (as per Global Biodiversity Assesment of UNEP-1995) </li></ul>Status of Biodiversity in India
  7. 10. Reasons for loss of biodiversity
  8. 11. <ul><li>Main reason for loss of biodiversity </li></ul>1. Population explosion
  9. 12. <ul><li>Single crop method of </li></ul><ul><li>farming </li></ul>
  10. 13. <ul><li>Most critical threat to marine biodiversity </li></ul>2.Habitat destruction
  11. 14. <ul><li>Oil pollution (Exxon Valder accident in Alaska) </li></ul>3.Pollution
  12. 15. <ul><li>Dumping of garbage at sea </li></ul>
  13. 16. 4.Global warming
  14. 17. <ul><li>Potent threat to biodiversity </li></ul><ul><li>Endemic species not able to survive </li></ul>5.Exotic species
  15. 18. <ul><li>One – eight of plant species are threatened with extinction </li></ul><ul><li>1,40,000 species are lost every year </li></ul><ul><li>Up to 2030, 50% of Earth’s species are estimated to become extinct </li></ul>Effect of loss of biodiversity
  16. 19. 1.Creating National Parks and Sanctuaries Sunderban national park Bird sanctuary Conservation of biodiversity
  17. 20. 2.Declaring some areas as biodiversity zones
  18. 21. 3.Undertaking certain projects to nurture specific species
  19. 22. <ul><li>1.What is the meaning of biodiversity? </li></ul><ul><li>Ans: The great variety of species that exist in the earth. </li></ul><ul><li>2.Why is it important? </li></ul><ul><li>Ans: All species are interdependent on each other and a loss </li></ul><ul><li>of single species can begin a chain reaction of </li></ul><ul><li>destruction </li></ul>Evaluation
  20. 23. <ul><li>3.What are the reasons for loss of biodiversity? </li></ul><ul><li>Ans: Population explosion,habitat destruction,global </li></ul><ul><li>warming etc. </li></ul><ul><li>4.How has global warming affected biodiversity? </li></ul><ul><li>Ans: Global warming has resulted in climate change at such </li></ul><ul><li>a fast pace that it has become impossible for species to </li></ul><ul><li>adapt to it. </li></ul>
  21. 24. <ul><li>5.What are the measures taken to conserve biodiversity? </li></ul><ul><li>Ans: Creating National Parks and Sanctuaries, declaring </li></ul><ul><li>some areas as Reserved Biodiversity Zones etc. </li></ul><ul><li>6.Why is biodiversity conservation “need of the hour”? </li></ul><ul><li>Ans: So many plants and animals are headed towards </li></ul><ul><li>extinction. To maintain the ecological balance every </li></ul><ul><li>species is equally important. </li></ul>
  22. 25. THANKYOU

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