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Consider the following statements about the Indicator species.
1. It is a species whose presence indicates the presence of a set of other species and whose absence indicates the lack of that entire set of species.
2. Lichens are indicators of air quality and are sensitive to sulfur dioxide.
2. Lichens are indicators of air quality and are sensitive to sulfur dioxide.
Which of these statements is/are incorrect?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither of them
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements about the Indicator species.1. It is...
Statement 1: It is a species whose presence indicates the presence of a set of other species and whose absence indicates the lack of that entire set of species.
This statement is correct. Indicator species are species whose presence or absence can indicate the presence or absence of a specific set of other species in an ecosystem. They are often used as ecological indicators to assess the health or condition of an ecosystem. If an indicator species is present, it suggests that the conditions required for the presence of other associated species are also present. Conversely, if an indicator species is absent, it suggests that the conditions required for the presence of other associated species are lacking.
Statement 2: Lichens are indicators of air quality and are sensitive to sulfur dioxide.
This statement is also correct. Lichens are composite organisms consisting of a fungus and a photosynthetic partner, such as an alga or cyanobacterium. They are highly sensitive to air pollution, especially sulfur dioxide. Lichens obtain nutrients and water from the air, and their structure allows them to accumulate pollutants from the environment. Therefore, their presence or absence can provide valuable information about the air quality in a particular area. In areas with high levels of sulfur dioxide pollution, lichens may be absent or show signs of damage, while in areas with clean air, healthy lichen populations can thrive.
Therefore, both statements are correct, and the correct answer is option 'D' - Neither of them.
This statement is correct. Indicator species are species whose presence or absence can indicate the presence or absence of a specific set of other species in an ecosystem. They are often used as ecological indicators to assess the health or condition of an ecosystem. If an indicator species is present, it suggests that the conditions required for the presence of other associated species are also present. Conversely, if an indicator species is absent, it suggests that the conditions required for the presence of other associated species are lacking.
Statement 2: Lichens are indicators of air quality and are sensitive to sulfur dioxide.
This statement is also correct. Lichens are composite organisms consisting of a fungus and a photosynthetic partner, such as an alga or cyanobacterium. They are highly sensitive to air pollution, especially sulfur dioxide. Lichens obtain nutrients and water from the air, and their structure allows them to accumulate pollutants from the environment. Therefore, their presence or absence can provide valuable information about the air quality in a particular area. In areas with high levels of sulfur dioxide pollution, lichens may be absent or show signs of damage, while in areas with clean air, healthy lichen populations can thrive.
Therefore, both statements are correct, and the correct answer is option 'D' - Neither of them.
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Consider the following statements about the Indicator species.1. It is...
Indicator species:
- Indicator species is a species whose presence indicates the presence of a set of other species and whose absence indicates the lack of that entire set of species.
- An indicator species is any biological species that defines a trait or characteristic of the environment.
- Many indicator species of the ocean systems are fish, invertebrates, periphyton, macrophytes, and specific species of ocean birds (like the Atlantic Puffin). Amphibian indicates chemicals, global warming, and air pollution. Lichens are indicators of air quality and are sensitive to sulfur dioxide.
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Consider the following statements about the Indicator species.1. It is a species whose presence indicates the presence of a set of other species and whose absence indicates the lack of that entire set of species.2. Lichens are indicators of air quality and are sensitive to sulfur dioxide.Which of these statements is/are incorrect?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither of themCorrect answer is option 'D'. Can you explain this answer?
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Consider the following statements about the Indicator species.1. It is a species whose presence indicates the presence of a set of other species and whose absence indicates the lack of that entire set of species.2. Lichens are indicators of air quality and are sensitive to sulfur dioxide.Which of these statements is/are incorrect?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither of themCorrect 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 about the Indicator species.1. It is a species whose presence indicates the presence of a set of other species and whose absence indicates the lack of that entire set of species.2. Lichens are indicators of air quality and are sensitive to sulfur dioxide.Which of these statements is/are incorrect?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither of themCorrect 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 about the Indicator species.1. It is a species whose presence indicates the presence of a set of other species and whose absence indicates the lack of that entire set of species.2. Lichens are indicators of air quality and are sensitive to sulfur dioxide.Which of these statements is/are incorrect?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither of themCorrect answer is option 'D'. Can you explain this answer?.
Consider the following statements about the Indicator species.1. It is a species whose presence indicates the presence of a set of other species and whose absence indicates the lack of that entire set of species.2. Lichens are indicators of air quality and are sensitive to sulfur dioxide.Which of these statements is/are incorrect?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither of themCorrect 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 about the Indicator species.1. It is a species whose presence indicates the presence of a set of other species and whose absence indicates the lack of that entire set of species.2. Lichens are indicators of air quality and are sensitive to sulfur dioxide.Which of these statements is/are incorrect?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither of themCorrect 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 about the Indicator species.1. It is a species whose presence indicates the presence of a set of other species and whose absence indicates the lack of that entire set of species.2. Lichens are indicators of air quality and are sensitive to sulfur dioxide.Which of these statements is/are incorrect?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither of themCorrect answer is option 'D'. Can you explain this answer?.
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