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Consider the following statements:
1.Microalgae are present at the top layer of the ocean surface.
2.Microalgae, though among primary producers in the ocean, have lesser photosynthetic efficiency than terrestrial plants.
3.Microalgae can produce food and absorb CO2 even in less availability of sunlight and iron.
How many of the statements given above are correct?
- a)Only one
- b)Only two
- c)All three
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements:1.Microalgae are present at the top ...
- Microalgae are photosynthetic microorganisms that can be found in diverse natural environments, such as water, rocks, and soil. They present higher photosynthetic efficiency than terrestrial plants, and are responsible for a significant fraction of the world's oxygen production. Hence, statement 2 is not correct.
- Marine microalgae play a pivotal role in the oceanic food chain and carbon dioxide absorption. However, as climate change continues, global warming is causing surface ocean waters to warm, resulting in reduced nutrient availability due to less mixing between the surface waters and nutrient-rich deeper waters. So nutrients become scarce at the surface, impacting the primary producers such as microalgae that are present in the top layer. Hence, statement 1 is correct.
- This scarcity of nutrients, including iron, impacts the primary producers like microalgae, causing them to produce less food and capture less carbon dioxide from the atmosphere. Microalgae need sunlight and ample iron to produce food and absorb carbon dioxide, but 35% of the ocean's surface lacks sufficient iron for their growth. Hence, statement 3 is not correct.
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Consider the following statements:1.Microalgae are present at the top ...
Microalgae in the Ocean
- The first statement is incorrect. Microalgae are not only present at the top layer of the ocean surface but can also be found throughout the water column, depending on the species and environmental conditions.
Photosynthetic Efficiency
- The second statement is true. While microalgae are indeed primary producers in the ocean, their photosynthetic efficiency is generally lower than that of terrestrial plants. This is due to factors such as light availability, nutrient limitations, and temperature variations in the marine environment.
Adaptability of Microalgae
- The third statement is incorrect. Microalgae are known for their ability to adapt to varying environmental conditions, including low sunlight and iron availability. They have evolved mechanisms to optimize photosynthesis and nutrient uptake even in challenging situations. This adaptability is one of the reasons why microalgae are considered important components of marine ecosystems.
- The first statement is incorrect. Microalgae are not only present at the top layer of the ocean surface but can also be found throughout the water column, depending on the species and environmental conditions.
Photosynthetic Efficiency
- The second statement is true. While microalgae are indeed primary producers in the ocean, their photosynthetic efficiency is generally lower than that of terrestrial plants. This is due to factors such as light availability, nutrient limitations, and temperature variations in the marine environment.
Adaptability of Microalgae
- The third statement is incorrect. Microalgae are known for their ability to adapt to varying environmental conditions, including low sunlight and iron availability. They have evolved mechanisms to optimize photosynthesis and nutrient uptake even in challenging situations. This adaptability is one of the reasons why microalgae are considered important components of marine ecosystems.
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Consider the following statements:1.Microalgae are present at the top layer of the ocean surface.2.Microalgae, though among primary producers in the ocean, have lesser photosynthetic efficiency than terrestrial plants.3.Microalgae can produce food and absorb CO2 even in less availability of sunlight and iron.How many of the statements given above are correct?a)Only oneb)Only twoc)All threed)None of the aboveCorrect answer is option 'A'. Can you explain this answer?
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Consider the following statements:1.Microalgae are present at the top layer of the ocean surface.2.Microalgae, though among primary producers in the ocean, have lesser photosynthetic efficiency than terrestrial plants.3.Microalgae can produce food and absorb CO2 even in less availability of sunlight and iron.How many of the statements given above are correct?a)Only oneb)Only twoc)All threed)None of the aboveCorrect answer is option 'A'. 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:1.Microalgae are present at the top layer of the ocean surface.2.Microalgae, though among primary producers in the ocean, have lesser photosynthetic efficiency than terrestrial plants.3.Microalgae can produce food and absorb CO2 even in less availability of sunlight and iron.How many of the statements given above are correct?a)Only oneb)Only twoc)All threed)None of the aboveCorrect answer is option 'A'. 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:1.Microalgae are present at the top layer of the ocean surface.2.Microalgae, though among primary producers in the ocean, have lesser photosynthetic efficiency than terrestrial plants.3.Microalgae can produce food and absorb CO2 even in less availability of sunlight and iron.How many of the statements given above are correct?a)Only oneb)Only twoc)All threed)None of the aboveCorrect answer is option 'A'. Can you explain this answer?.
Consider the following statements:1.Microalgae are present at the top layer of the ocean surface.2.Microalgae, though among primary producers in the ocean, have lesser photosynthetic efficiency than terrestrial plants.3.Microalgae can produce food and absorb CO2 even in less availability of sunlight and iron.How many of the statements given above are correct?a)Only oneb)Only twoc)All threed)None of the aboveCorrect answer is option 'A'. 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:1.Microalgae are present at the top layer of the ocean surface.2.Microalgae, though among primary producers in the ocean, have lesser photosynthetic efficiency than terrestrial plants.3.Microalgae can produce food and absorb CO2 even in less availability of sunlight and iron.How many of the statements given above are correct?a)Only oneb)Only twoc)All threed)None of the aboveCorrect answer is option 'A'. 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:1.Microalgae are present at the top layer of the ocean surface.2.Microalgae, though among primary producers in the ocean, have lesser photosynthetic efficiency than terrestrial plants.3.Microalgae can produce food and absorb CO2 even in less availability of sunlight and iron.How many of the statements given above are correct?a)Only oneb)Only twoc)All threed)None of the aboveCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Consider the following statements:1.Microalgae are present at the top layer of the ocean surface.2.Microalgae, though among primary producers in the ocean, have lesser photosynthetic efficiency than terrestrial plants.3.Microalgae can produce food and absorb CO2 even in less availability of sunlight and iron.How many of the statements given above are correct?a)Only oneb)Only twoc)All threed)None of the aboveCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC.
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ample number of questions to practice Consider the following statements:1.Microalgae are present at the top layer of the ocean surface.2.Microalgae, though among primary producers in the ocean, have lesser photosynthetic efficiency than terrestrial plants.3.Microalgae can produce food and absorb CO2 even in less availability of sunlight and iron.How many of the statements given above are correct?a)Only oneb)Only twoc)All threed)None of the aboveCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice UPSC tests.
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