GS PrelimsScience and TechnologyHuman Health and Diseases2016

Which of the following statements is/are correct? Viruses can infect 1. bacteria 2. fungi 3. plants Select the correct answer using the code given below.

A

1 and 2 only

B

3 only

C

1 and 3 only

D

1, 2 and 3

Correct Answer: Option D

Explanation

1. Viruses are obligate intracellular parasites, meaning they require a living host cell to replicate. They exhibit a wide host range across different biological kingdoms. 2. Statement 1 is correct. Viruses that infect bacteria are known as bacteriophages. They are abundant and play significant roles in microbial ecology. 3. Statement 2 is correct. Viruses that infect fungi are called mycoviruses. They can affect fungal growth and pathogenicity. 4. Statement 3 is correct. Numerous viruses are known to infect plants, causing various diseases. Examples include Tobacco Mosaic Virus (TMV). 5. Since viruses can infect bacteria, fungi, and plants, all three statements are correct.

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