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With reference to the Coral Bleaching, consider the following statements:
1. Coral Bleaching happens when corals experience stress in their environment due to changes in temperature, pollution or high levels of ocean acidity.
2. Under stressed conditions, the zooxanthellae or food-producing algae living inside coral polyps start producing reactive oxygen species, which are not beneficial to the corals.
Which of the statements given above is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
With reference to the Coral Bleaching, consider the following statemen...
The management authority of the world’s largest coral reef system, Australia’s Great Barrier Reef, confirmed on March 25 that the reef is experiencing a mass coral bleaching event.
- Corals are marine invertebrates or animals not possessing a spine. Each coral is called a polyp and thousands of such polyps live together to form a colony, which grows when polyps multiply to make copies of themselves.
- Corals share a symbiotic relationship with single-celled algae called zooxanthellae.
- The algae provides the coral with food and nutrients, which they make through photosynthesis, using the sun’s light. In turn, the corals give the algae a home and key nutrients. The zooxanthellae also give corals their bright colour.
- Australia’s Great Barrier Reef is the world’s largest reef system stretching across 2,300 km. It hosts 400 different types of coral, gives shelter to 1,500 species of fish and 4,000 types of mollusc.
Coral Bleaching
- Coral Bleaching happens when corals experience stress in their environment due to changes in temperature, pollution or high levels of ocean acidity.
- Under stressed conditions, the zooxanthellae or food-producing algae living inside coral polyps start producing reactive oxygen species, which are not beneficial to the corals.
- So, the corals expel the colour-giving zooxanthellae from their polyps, which exposes their pale white exoskeleton, giving the corals a bleached appearance. This also ends the symbiotic relationship that helps the corals to survive and grow.
Hence both statements are correct.
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With reference to the Coral Bleaching, consider the following statemen...
Understanding Coral Bleaching
Coral bleaching is a significant environmental phenomenon that can severely impact marine ecosystems. The statements provided highlight key aspects of this process.
Statement 1: Coral Bleaching Causes
- Coral bleaching occurs when corals undergo stress due to various environmental factors.
- These stressors include:
- Increased water temperatures: Higher temperatures can lead to the expulsion of zooxanthellae, the symbiotic algae crucial for coral health.
- Pollution: Nutrient runoff and contaminants can disrupt coral ecosystems.
- Ocean acidification: Changes in ocean chemistry can impair coral growth and resilience.
- Thus, Statement 1 is accurate.
Statement 2: Reactive Oxygen Species Production
- Under stress, zooxanthellae begin to produce reactive oxygen species (ROS).
- These ROS can lead to oxidative stress in corals, damaging their tissues and impairing their ability to recover.
- This process exacerbates the bleaching effect, as corals rely on zooxanthellae for energy and sustenance.
- Therefore, Statement 2 is also correct.
Conclusion
Both statements accurately describe the causes and effects of coral bleaching. They outline how environmental stressors impact coral health and the biological processes involved.
Correct Answer: Both 1 and 2
- Thus, the correct answer to the question is Option C: Both 1 and 2.
Coral bleaching is a significant environmental phenomenon that can severely impact marine ecosystems. The statements provided highlight key aspects of this process.
Statement 1: Coral Bleaching Causes
- Coral bleaching occurs when corals undergo stress due to various environmental factors.
- These stressors include:
- Increased water temperatures: Higher temperatures can lead to the expulsion of zooxanthellae, the symbiotic algae crucial for coral health.
- Pollution: Nutrient runoff and contaminants can disrupt coral ecosystems.
- Ocean acidification: Changes in ocean chemistry can impair coral growth and resilience.
- Thus, Statement 1 is accurate.
Statement 2: Reactive Oxygen Species Production
- Under stress, zooxanthellae begin to produce reactive oxygen species (ROS).
- These ROS can lead to oxidative stress in corals, damaging their tissues and impairing their ability to recover.
- This process exacerbates the bleaching effect, as corals rely on zooxanthellae for energy and sustenance.
- Therefore, Statement 2 is also correct.
Conclusion
Both statements accurately describe the causes and effects of coral bleaching. They outline how environmental stressors impact coral health and the biological processes involved.
Correct Answer: Both 1 and 2
- Thus, the correct answer to the question is Option C: Both 1 and 2.
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With reference to the Coral Bleaching, consider the following statements:1. Coral Bleaching happens when corals experience stress in their environment due to changes in temperature, pollution or high levels of ocean acidity.2. Under stressed conditions, the zooxanthellae or food-producing algae living inside coral polyps start producing reactive oxygen species, which are not beneficial to the corals.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?
Question Description
With reference to the Coral Bleaching, consider the following statements:1. Coral Bleaching happens when corals experience stress in their environment due to changes in temperature, pollution or high levels of ocean acidity.2. Under stressed conditions, the zooxanthellae or food-producing algae living inside coral polyps start producing reactive oxygen species, which are not beneficial to the corals.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct 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 With reference to the Coral Bleaching, consider the following statements:1. Coral Bleaching happens when corals experience stress in their environment due to changes in temperature, pollution or high levels of ocean acidity.2. Under stressed conditions, the zooxanthellae or food-producing algae living inside coral polyps start producing reactive oxygen species, which are not beneficial to the corals.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct 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 With reference to the Coral Bleaching, consider the following statements:1. Coral Bleaching happens when corals experience stress in their environment due to changes in temperature, pollution or high levels of ocean acidity.2. Under stressed conditions, the zooxanthellae or food-producing algae living inside coral polyps start producing reactive oxygen species, which are not beneficial to the corals.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?.
With reference to the Coral Bleaching, consider the following statements:1. Coral Bleaching happens when corals experience stress in their environment due to changes in temperature, pollution or high levels of ocean acidity.2. Under stressed conditions, the zooxanthellae or food-producing algae living inside coral polyps start producing reactive oxygen species, which are not beneficial to the corals.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct 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 With reference to the Coral Bleaching, consider the following statements:1. Coral Bleaching happens when corals experience stress in their environment due to changes in temperature, pollution or high levels of ocean acidity.2. Under stressed conditions, the zooxanthellae or food-producing algae living inside coral polyps start producing reactive oxygen species, which are not beneficial to the corals.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct 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 With reference to the Coral Bleaching, consider the following statements:1. Coral Bleaching happens when corals experience stress in their environment due to changes in temperature, pollution or high levels of ocean acidity.2. Under stressed conditions, the zooxanthellae or food-producing algae living inside coral polyps start producing reactive oxygen species, which are not beneficial to the corals.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?.
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