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Biodiversity and Conservation

Threats to Biodiversity Practice Questions

20 free Threats to Biodiversity practice questions for the NCERT Biology, each with the correct answer and a detailed explanation. Open any question below, or take the full set as an interactive quiz.

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All Threats to Biodiversity questions

20 questions
  1. Q1. Which of the following is often described as the 'Evil Quartet' in the context of biodiversity loss?
  2. Q2. Which human activity is considered the most important cause driving animals and plants to extinction?
  3. Q3. The tropical rain forests, which once covered 14 percent of Earth's land surface, now cover no more than:
  4. Q4. The Amazon rain forest is being cut and cleared for which primary purpose?
  5. Q5. When a large habitat is broken into small fragments due to various human activities, which types of organisms are worst affected?
  6. Q6. Which of the following fish species became extinct in Lake Victoria after the introduction of the Nile Perch?
  7. Q7. Which invasive weed species, introduced to India, has caused environmental damage and threats to native species?
  8. Q8. The illegal introduction of which African catfish for aquaculture is posing a threat to indigenous catfishes in Indian rivers?
  9. Q9. What is 'co-extinction' in the context of biodiversity?
  10. Q10. A plant-pollinator mutualism where the extinction of one leads to the extinction of the other is an example of:
  11. Q11. Stellar’s sea cow and the Passenger pigeon became extinct due to:
  12. Q12. Which of the following is NOT a consequence of climate change on biodiversity?
  13. Q13. How does global warming specifically threaten coastal biodiversity?
  14. Q14. The 'Lungs of the Planet' is a title given to:
  15. Q15. Invasive alien species are successful in new environments primarily because:
  16. Q16. Which of these is a direct effect of habitat fragmentation on animal populations?
  17. Q17. The recent extinction of the Dodo in Mauritius is attributed to:
  18. Q18. Which of the following is a major threat to the biodiversity of the Great Barrier Reef?
  19. Q19. Loss of biodiversity in a region may lead to all of the following EXCEPT:
  20. Q20. The impact of over-exploitation is most severely seen in species that have: