by Q. Consider the following statements:
UPSC Civil Services Examination (Prelims) 2025 – General Studies Paper I
Which of the statements given above is/are correct?
(a) I only
(b) II only
(c) III only
(d) None
Answer: (d) None
Explanation:
Statement I is incorrect because viruses are abundantly present in ocean waters, and marine ecosystems contain a very large number of viruses, especially bacteriophages.
Statement II is incorrect because bacteriophages are viruses that specifically infect bacteria and are among the most common biological entities on Earth.
Statement III is incorrect because viruses actively alter the transcriptional machinery of host cells to promote viral replication and suppress host gene expression.
Therefore, none of the given statements are correct, making option (d) None the correct answer.
Answer: (d) None
