UPSC Exam > UPSC Questions > Consider the following statements regarding C...
Start Learning for Free
Consider the following statements regarding Coral bleaching.
- When corals are stressed by changes in temperature, light or nutrients, they expel the algae living in their tissue, causing them to turn white.
- Increase in zooplankton levels triggers coral bleaching.
- Cold water temperatures also cause coral bleaching.
Which of the above statements is/are correct?
- a)1, 2
- b)2, 3
- c)1, 3
- d)1, 2, 3
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
Consider the following statements regarding Coral bleaching. When cora...
Coral bleaching is a phenomenon that occurs when corals are stressed by changes in their environment, such as temperature, light, or nutrient levels. It is a significant concern for the health and survival of coral reefs, as it can lead to the death of the coral colonies.
The given statements about coral bleaching are as follows:
1) When corals are stressed by changes in temperature, light, or nutrients, they expel the algae living in their tissue, causing them to turn white.
This statement is correct. Corals have a symbiotic relationship with algae called zooxanthellae, which live within their tissues. These algae provide the corals with essential nutrients through photosynthesis and give them their vibrant colors. However, when corals are under stress, such as from high water temperatures, they expel the algae, resulting in their white or bleached appearance.
2) Increase in zooplankton levels triggers coral bleaching.
This statement is incorrect. Zooplankton are tiny animals that float in the water column, and they do not directly trigger coral bleaching. However, changes in the zooplankton population can indirectly impact corals. For example, if there is an increase in zooplankton levels, it may indicate an imbalance in the ecosystem, which can affect the overall health of coral reefs. But it is not a direct cause of coral bleaching.
3) Cold water temperatures also cause coral bleaching.
This statement is correct. While it is commonly known that high water temperatures can trigger coral bleaching, cold water temperatures can also have a similar effect. Cold water bleaching is mainly observed in shallow coral reefs, where corals are adapted to warm waters. If the water temperature drops suddenly or remains cold for an extended period, the corals can become stressed and expel their symbiotic algae, leading to bleaching.
In conclusion, statement 1, 2, and 3 are correct. Coral bleaching is primarily caused by changes in temperature, light, and nutrient levels, which result in the expulsion of the algae living in the coral tissues. Both high and cold water temperatures can trigger coral bleaching, while an increase in zooplankton levels is not a direct cause but can indirectly impact coral health.
The given statements about coral bleaching are as follows:
1) When corals are stressed by changes in temperature, light, or nutrients, they expel the algae living in their tissue, causing them to turn white.
This statement is correct. Corals have a symbiotic relationship with algae called zooxanthellae, which live within their tissues. These algae provide the corals with essential nutrients through photosynthesis and give them their vibrant colors. However, when corals are under stress, such as from high water temperatures, they expel the algae, resulting in their white or bleached appearance.
2) Increase in zooplankton levels triggers coral bleaching.
This statement is incorrect. Zooplankton are tiny animals that float in the water column, and they do not directly trigger coral bleaching. However, changes in the zooplankton population can indirectly impact corals. For example, if there is an increase in zooplankton levels, it may indicate an imbalance in the ecosystem, which can affect the overall health of coral reefs. But it is not a direct cause of coral bleaching.
3) Cold water temperatures also cause coral bleaching.
This statement is correct. While it is commonly known that high water temperatures can trigger coral bleaching, cold water temperatures can also have a similar effect. Cold water bleaching is mainly observed in shallow coral reefs, where corals are adapted to warm waters. If the water temperature drops suddenly or remains cold for an extended period, the corals can become stressed and expel their symbiotic algae, leading to bleaching.
In conclusion, statement 1, 2, and 3 are correct. Coral bleaching is primarily caused by changes in temperature, light, and nutrient levels, which result in the expulsion of the algae living in the coral tissues. Both high and cold water temperatures can trigger coral bleaching, while an increase in zooplankton levels is not a direct cause but can indirectly impact coral health.
Attention UPSC Students!
To make sure you are not studying endlessly, EduRev has designed UPSC study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in UPSC.
|
Explore Courses for UPSC exam
|
|
Top Courses for UPSCView all
Consider the following statements regarding Coral bleaching. When corals are stressed by changes in temperature, light or nutrients, they expel the algae living in their tissue, causing them to turn white. Increase in zooplankton levels triggers coral bleaching. Cold water temperatures also cause coral bleaching.Which of the above statements is/are correct?a)1, 2b)2, 3c)1, 3d)1, 2, 3Correct answer is option 'D'. Can you explain this answer?
Question Description
Consider the following statements regarding Coral bleaching. When corals are stressed by changes in temperature, light or nutrients, they expel the algae living in their tissue, causing them to turn white. Increase in zooplankton levels triggers coral bleaching. Cold water temperatures also cause coral bleaching.Which of the above statements is/are correct?a)1, 2b)2, 3c)1, 3d)1, 2, 3Correct answer is option 'D'. 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. When corals are stressed by changes in temperature, light or nutrients, they expel the algae living in their tissue, causing them to turn white. Increase in zooplankton levels triggers coral bleaching. Cold water temperatures also cause coral bleaching.Which of the above statements is/are correct?a)1, 2b)2, 3c)1, 3d)1, 2, 3Correct answer is option 'D'. 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. When corals are stressed by changes in temperature, light or nutrients, they expel the algae living in their tissue, causing them to turn white. Increase in zooplankton levels triggers coral bleaching. Cold water temperatures also cause coral bleaching.Which of the above statements is/are correct?a)1, 2b)2, 3c)1, 3d)1, 2, 3Correct answer is option 'D'. Can you explain this answer?.
Consider the following statements regarding Coral bleaching. When corals are stressed by changes in temperature, light or nutrients, they expel the algae living in their tissue, causing them to turn white. Increase in zooplankton levels triggers coral bleaching. Cold water temperatures also cause coral bleaching.Which of the above statements is/are correct?a)1, 2b)2, 3c)1, 3d)1, 2, 3Correct answer is option 'D'. 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. When corals are stressed by changes in temperature, light or nutrients, they expel the algae living in their tissue, causing them to turn white. Increase in zooplankton levels triggers coral bleaching. Cold water temperatures also cause coral bleaching.Which of the above statements is/are correct?a)1, 2b)2, 3c)1, 3d)1, 2, 3Correct answer is option 'D'. 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. When corals are stressed by changes in temperature, light or nutrients, they expel the algae living in their tissue, causing them to turn white. Increase in zooplankton levels triggers coral bleaching. Cold water temperatures also cause coral bleaching.Which of the above statements is/are correct?a)1, 2b)2, 3c)1, 3d)1, 2, 3Correct answer is option 'D'. Can you explain this answer?.
Solutions for Consider the following statements regarding Coral bleaching. When corals are stressed by changes in temperature, light or nutrients, they expel the algae living in their tissue, causing them to turn white. Increase in zooplankton levels triggers coral bleaching. Cold water temperatures also cause coral bleaching.Which of the above statements is/are correct?a)1, 2b)2, 3c)1, 3d)1, 2, 3Correct answer is option 'D'. 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.
Here you can find the meaning of Consider the following statements regarding Coral bleaching. When corals are stressed by changes in temperature, light or nutrients, they expel the algae living in their tissue, causing them to turn white. Increase in zooplankton levels triggers coral bleaching. Cold water temperatures also cause coral bleaching.Which of the above statements is/are correct?a)1, 2b)2, 3c)1, 3d)1, 2, 3Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Consider the following statements regarding Coral bleaching. When corals are stressed by changes in temperature, light or nutrients, they expel the algae living in their tissue, causing them to turn white. Increase in zooplankton levels triggers coral bleaching. Cold water temperatures also cause coral bleaching.Which of the above statements is/are correct?a)1, 2b)2, 3c)1, 3d)1, 2, 3Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Consider the following statements regarding Coral bleaching. When corals are stressed by changes in temperature, light or nutrients, they expel the algae living in their tissue, causing them to turn white. Increase in zooplankton levels triggers coral bleaching. Cold water temperatures also cause coral bleaching.Which of the above statements is/are correct?a)1, 2b)2, 3c)1, 3d)1, 2, 3Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Consider the following statements regarding Coral bleaching. When corals are stressed by changes in temperature, light or nutrients, they expel the algae living in their tissue, causing them to turn white. Increase in zooplankton levels triggers coral bleaching. Cold water temperatures also cause coral bleaching.Which of the above statements is/are correct?a)1, 2b)2, 3c)1, 3d)1, 2, 3Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Consider the following statements regarding Coral bleaching. When corals are stressed by changes in temperature, light or nutrients, they expel the algae living in their tissue, causing them to turn white. Increase in zooplankton levels triggers coral bleaching. Cold water temperatures also cause coral bleaching.Which of the above statements is/are correct?a)1, 2b)2, 3c)1, 3d)1, 2, 3Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice UPSC tests.
|
|
Explore Courses for UPSC exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup