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9th Standard English Medium Science Subject World of Microbes Book Back 2 Mark Questions with Solution Part - I updated Book back Questions Question Bank Software May-13 , 2022

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9th Standard English Medium Science Subject World of Microbes Book Back 2 Mark Questions with Solution Part - I updated Book back Questions

    5 x 2 = 10

  1. Define the following.
    1. Pathogen
    2. Bacteriophages
    3. Plasmid
    4. Vaccines
    5. Prions

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