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NDA 2020 GAT · General Knowledge · Nutrition, Diseases and Health · medium

Viruses. 1. Viruses have a complete cellular organisation with a cell wall and a nucleus. 2. Polio and influenza are caused by viruses.

Single correct option

Consider the following statements about viruses.
1. Viruses have a complete cellular organisation with a cell wall and a nucleus.
2. Polio and influenza are caused by viruses.
Which of the statements given above is/are correct?
  1. A. 1 only
  2. B. 2 only
  3. C. Both 1 and 2
  4. D. Neither 1 nor 2
Show answer and solution

Answer: (B) 2 only

Viruses are non-cellular. They have genetic material (DNA or RNA) in a protein coat and reproduce only inside a host cell, so statement 1 is wrong. Polio and influenza are viral diseases, so statement 2 is correct. Bacteria, not viruses, have a cell wall.
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Original question written in the NDA 2020 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake