1. Viruses are living organisms.

2. AIDS stands for _______

3. Viruses that infect plants have ________

4. Lichens are indicators of pollution because ________

5. Which among the following are incorrect about Viruses?

6. Which among the following is incorrect about the following figure?

7. Which among the following is odd?

8. Which among the following is not a difference between viruses and viroids?

9. RNA of the viroids is of low molecular weight when compared to viruses.

10. Who discovered viroids?

11. Read the following paragraph and answer the following question.
Hershey-Chase experiment broke the barriers of science and expanded the understanding of life. In this experiment, two sets of bacteriophages are used in which one contains radioactive sulphur in its protein coat (Set-I) and other contains radioactive phosphorus in its DNA (Set-II). These two sets were allowed reproduce in E.Coli culture and then centrifuged.
Which among the following are correct Set-I and Set-II after centrifugation?

12. The word “Virus” means ______

13. Viruses that infect bacterium are called as _________

14. The fungal portion in Lichens is known as _________

15. Why are viruses not included in any of the five kingdoms?

16. Viruses in animals contain both RNA and DNA.

17. Viruses are smaller than viroids.

18. Viruses are an example of ________

19. Who proved that viruses are crystalline like structures?

20. Viruses contain sheath made of ______