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Consider the following statements:
1. Chlorella is present in sewage.
2. Chlorella produces food rich in vitamins, proteins, etc.
3. Chlorella is used in prolonged space flight for O2.
4. Chlorella yields an antibiotic, penicillin.

Which of the statements given above is/are correct?
  • a)
    1 and 2 only
  • b)
    2 and 3 only
  • c)
    1, 2 and 3 only
  • d)
    1, 2, 3 and 4
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Consider the following statements:1. Chlorella is present in sewage.2....
In sewage treatment tanks, different aerobic bacteria are used to degrade organic wastes. 'Chlorella' is used as a source of providing oxygen to the bacteria. Chlorella is an attractive food source as it is high in protein and other essential nutrients. Dried Chlorella contains around 45% protein, 20% fat, 20% carbohydrate and pretty good amount of vitamins. Chlorella is a potential plant to be used in space flight shuttles for continuous oxygen supply. Chlorellin is an antibiotic obtained from chlorella.
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Most Upvoted Answer
Consider the following statements:1. Chlorella is present in sewage.2....
Statement 1: Chlorella is present in sewage.
Chlorella is a type of green algae that can be found in various environments, including sewage. Algae are known to thrive in nutrient-rich environments, and sewage provides an abundant source of nutrients such as nitrogen and phosphorus. Therefore, it is possible for Chlorella to be present in sewage.

Statement 2: Chlorella produces food rich in vitamins, proteins, etc.
Chlorella is highly nutritious and is often referred to as a superfood. It is rich in essential nutrients such as vitamins, minerals, proteins, and antioxidants. Chlorella is known to contain high amounts of vitamins B12, C, and E, as well as minerals like iron, magnesium, and zinc. It also contains all nine essential amino acids, making it a complete protein source. Therefore, statement 2 is correct.

Statement 3: Chlorella is used in prolonged space flight for O2.
Chlorella has been studied for its potential use in space travel and colonization. It is known for its ability to photosynthesize and produce oxygen through the process of photosynthesis. This makes it a suitable candidate for oxygen production in enclosed environments such as spacecraft or space colonies. Therefore, statement 3 is correct.

Statement 4: Chlorella yields an antibiotic, penicillin.
Penicillin is a type of antibiotic that is derived from the fungus Penicillium, not Chlorella. Chlorella is a type of algae and does not produce penicillin. Therefore, statement 4 is incorrect.

In conclusion, statements 1, 2, and 3 are correct, while statement 4 is incorrect. Therefore, the correct answer is option B, which states that statements 2 and 3 only are correct.
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Consider the following statements:1. Chlorella is present in sewage.2. Chlorella produces food rich in vitamins, proteins, etc.3. Chlorella is used in prolonged space flight for O2.4. Chlorella yields an antibiotic, penicillin.Which of the statements given above is/are correct?a)1 and 2 onlyb)2 and 3 onlyc)1, 2 and 3 onlyd)1, 2, 3 and 4Correct answer is option 'B'. Can you explain this answer?
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Consider the following statements:1. Chlorella is present in sewage.2. Chlorella produces food rich in vitamins, proteins, etc.3. Chlorella is used in prolonged space flight for O2.4. Chlorella yields an antibiotic, penicillin.Which of the statements given above is/are correct?a)1 and 2 onlyb)2 and 3 onlyc)1, 2 and 3 onlyd)1, 2, 3 and 4Correct answer is option 'B'. Can you explain this answer? for UPSC 2025 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. Chlorella is present in sewage.2. Chlorella produces food rich in vitamins, proteins, etc.3. Chlorella is used in prolonged space flight for O2.4. Chlorella yields an antibiotic, penicillin.Which of the statements given above is/are correct?a)1 and 2 onlyb)2 and 3 onlyc)1, 2 and 3 onlyd)1, 2, 3 and 4Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements:1. Chlorella is present in sewage.2. Chlorella produces food rich in vitamins, proteins, etc.3. Chlorella is used in prolonged space flight for O2.4. Chlorella yields an antibiotic, penicillin.Which of the statements given above is/are correct?a)1 and 2 onlyb)2 and 3 onlyc)1, 2 and 3 onlyd)1, 2, 3 and 4Correct answer is option 'B'. Can you explain this answer?.
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