UPSC General Studies Solved Paper - General Studies-2016

  • question_answer
    Which of the following statements is/are correct?
    'Viruses can infect
    1. Bacteria                    
    2. Fungi         
    3. Plants
    Select the correct answer using the codes given below

    A)  1 and 2

    B)         Only 3

    C)  1 and 3

    D)         1, 2 and 3

    Correct Answer: D

    Solution :

    Exp. [d] Viruses are too small to be seen by the naked eye. They can't multiply on their own, so they have to invade a 'hots' cell and take over its machinery in order to be able to make more virus particles. T4 bacteriophage is a virus that looks like an alien landing pod with 6 legs, the bacteria attaches to the surface of the much larger bacteria Escherichia coli (E coli). Plants are susceptible to viral diseases, just like any living systems. Viruses cause many plant diseases and are responsible for huge losses in crop production and Quality in all parts of the world. Viruses and other genetic elements are common inhabitants of fungi. As viruses have a small genome, increased virulence resulting from a chance mutation is likely. The viruses that have been detected in fungi are all thought to be double stranded RNA. A protein coat may envelope the virion (nucleic acid).

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