Coral Bleaching Cause MCQ

Question

Coral Bleaching is caused mainly by:

Select an answer

Question & Answer (English)

Coral Bleaching is caused mainly by:

  1. Cold water
  2. Rise in Sea Temperature — Correct Answer
  3. High salinity
  4. Low light
Explanation:
Correct Answer Explanation

Coral Bleaching occurs when corals, stressed by changes in conditions, expel the symbiotic algae (zooxanthellae) living in their tissues, turning them white. The leading cause of this stress is a Rise in Sea Temperature due to global warming.

Incorrect Options Analysis
  • Cold water: While extreme cold can cause bleaching, the current global crisis is driven by heat stress.
  • High salinity: Can be a stressor but is not the primary global cause compared to thermal stress.

प्रश्न एवं उत्तर (हिंदी)

प्रवाल विरंजन (Coral Bleaching) मुख्य रूप से किसके कारण होता है?

  1. ठंडा पानी
  2. समुद्र के तापमान में वृद्धि — सही उत्तर
  3. उच्च लवणता
  4. कम रोशनी
स्पष्टीकरण:
सही उत्तर का स्पष्टीकरण

प्रवाल विरंजन (Coral Bleaching) तब होता है जब तनाव के कारण प्रवाल (Corals) अपने ऊतकों में रहने वाले सहजीवी शैवाल (zooxanthellae) को बाहर निकाल देते हैं, जिससे वे सफेद हो जाते हैं। इस तनाव का मुख्य कारण ग्लोबल वार्मिंग की वजह से समुद्र के तापमान में वृद्धि है।

📚 About this Topic — GK Important Topics

This multiple choice question is from GK Important Topics, Pollution & Climate Change. It has 4 options with a detailed explanation of the correct answer and is available in both English and Hindi (द्विभाषी). Practice more MCQs from GK Important Topics to strengthen your preparation.

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