NEET Biology The Living World / जीव जगत Question Bank Viruses

  • question_answer
    Virusus usually infect the whole plant except the                                              [CBSE PMT 1993; MH CET 2000]

    A)            Stem apex

    B)            Cortex

    C)            Pith

    D)            Phloem

    Correct Answer: A

    Solution :

                 Because in apical tips of shoot apex, a few growth hormones like auxins are formed which check infection of viruses.  


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