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UPPSC PCS 2024 · Question 19 of 150

Which of the following reasons caused catastrophic coral bleaching and mass coral deaths in the Andaman and Nicobar Islands?

Geography

  1. AIncreased industrial activities in the coastal regions
  2. BIncrease of 2°C temperature in the Indian OceanCorrect
  3. CHeavy marine pollution
  4. DDecrease of temperature by 4°C in the Indian Ocean

Answer: B. Increase of 2°C temperature in the Indian Ocean

Explanation

The increase in sea surface temperature by 2°C due to global warming and climate change led to catastrophic coral bleaching in the Andaman and Nicobar Islands. Corals expel their symbiotic algae (zooxanthellae) under thermal stress, causing bleaching and eventual death if conditions persist.

Source: edurev.in UPPSC Prelims 2024 GS Paper I (English); answers per selfstudywala.com detailed solution based on UPPCS official answer key

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