CBSE Class 11-science Biology Virus, Viroids And Lichens
- What are virulents? Give example.
- Who coined the term virus?
- Who discovered viroids?
- How is a viroid different from a virus?
- What are lichens?
- Name any one disease caused by viroids.
- Write about the contributions of the following scientists: M. W. Beijerinck W. M. Stanley
- Explain the terms mycobiont and phycobiont.
- Write any two features of viroids.
- Draw a labelled diagram of a bacteriophage.
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