UPSC solved previous year questions

UPSC Biology PYQ with Answers

6 solved Biology questions from previous UPSC papers, each with an answer and explanation.

Questions
6
Years covered
2016–2025
Exam years
5
With answers
6

Biology questions by year

UPSC Biology PYQ with Answers

1–1 of 1
  1. Q1 2025 Prelims GS

    Consider the following statements: I. No virus can survive in ocean waters. II. No virus can infect bacteria. III. No virus can change the cellular transcriptional activity in host cells. How many of the above statements are correct?

    1. Only one
    2. Only two
    3. All the three
    4. Noneβœ“
    Answer explanation

    None All three statements are factually incorrect: viruses do survive and are abundant in ocean waters; bacteriophages are viruses that specifically infect bacteria; and many viruses do alter/hijack the host cell's transcriptional…

    BiologyScience and technologyVirology
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