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Consider the following statements regarding Coral Bleaching:
It refers to the paling of a coral’s colour.
  • It is caused due to an increase in density of zooxanthellae in reefs.
  • Very high temperature may cause Coral Bleaching.
    Which of the statements given above is/are correct?
    • a)
      1 only
    • b)
      1 and 2 only
    • c)
      1 and 3 only
    • d)
      1, 2 and 3
    Correct answer is option 'C'. Can you explain this answer?
    Most Upvoted Answer
    Consider the following statements regarding Coral Bleaching: It ref...
    Option (c) is the correct answer.
    • Statement 1 is correct. Bleaching refers to the paling of coral colour. It occurs when the density of zooxanthellae residing inside the reefs declines as the colour is given by the zooxanthellae.
    • Statement 2 is incorrect. When the bleaching of corals occurs, they usually lose around 60-90 percent of their zooxanthellae, and each zooxanthellae may lose around 50-80 percent of its photosynthetic pigments.
    • If the stress-causing bleaching is not too severe and if it decreases with time, the affected corals usually regain their symbiotic algae within several weeks or a few months.
    • If the loss of zooxanthellae is prolonged i.e., if the stress continues and depleted zooxanthellae populations do not recover, the coral host eventually dies.
    • Statement 3 is correct. Corals come under stress due to sudden change in temperature, water salinity or excess nutrients. Thus, very high temperature can cause coral bleaching.
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    Consider the following statements regarding Coral Bleaching: It refers to the paling of a coral’s colour. It is caused due to an increase in density of zooxanthellae in reefs. Very high temperature may cause Coral Bleaching. Which of the statements given above is/are correct?a)1 onlyb)1 and 2 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer?
    Question Description
    Consider the following statements regarding Coral Bleaching: It refers to the paling of a coral’s colour. It is caused due to an increase in density of zooxanthellae in reefs. Very high temperature may cause Coral Bleaching. Which of the statements given above is/are correct?a)1 onlyb)1 and 2 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following statements regarding Coral Bleaching: It refers to the paling of a coral’s colour. It is caused due to an increase in density of zooxanthellae in reefs. Very high temperature may cause Coral Bleaching. Which of the statements given above is/are correct?a)1 onlyb)1 and 2 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements regarding Coral Bleaching: It refers to the paling of a coral’s colour. It is caused due to an increase in density of zooxanthellae in reefs. Very high temperature may cause Coral Bleaching. Which of the statements given above is/are correct?a)1 onlyb)1 and 2 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer?.
    Solutions for Consider the following statements regarding Coral Bleaching: It refers to the paling of a coral’s colour. It is caused due to an increase in density of zooxanthellae in reefs. Very high temperature may cause Coral Bleaching. Which of the statements given above is/are correct?a)1 onlyb)1 and 2 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC. Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free.
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