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Consider the statements regarding ‘Coral bleaching’
1. It is the loss of zooxanthellae through either expulsion or loss of algal pigmentation.
2. It happens due to increase in ocean temperature
3. All the corals undergoing bleaching are dead corals
Select the correct code-
  • a)
    1 and 3
  • b)
    Only 2
  • c)
    Only 1
  • d)
    2 and 3
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Consider the statements regarding ‘Coral bleaching’1. It i...
First statement is true. Coral bleaching not only happens because of warm temperature but can also happen due to Cold temperature. Not all bleaching events are due to warm water. In January 2010, cold water temperatures in the Florida Keys caused a coral bleaching event that resulted in some coral death. Water temperatures dropped 12.06 degrees Fahrenheit lower than the typical temperatures observed at this time of year.
Researchers will evaluate if this cold-stress event will make corals more susceptible to
disease in the same way that warmer waters impact corals.
When a coral bleaches, it is not dead. Corals can survive a bleaching event, but they are under more stress and are subject to mortality.
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Consider the statements regarding ‘Coral bleaching’1. It is the loss of zooxanthellae through either expulsion or loss of algal pigmentation.2. It happens due to increase in ocean temperature3. All the corals undergoing bleaching are dead coralsSelect the correct code-a)1 and 3b)Only 2c)Only 1d)2 and 3Correct answer is option 'C'. Can you explain this answer?
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