61. Mosaic disease of tobaco is caused due to

1. 1. Virus

   
   
   

   2. Bacteria

   
   
   

   3. Fungi

   
   
   

   4. Algae

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: A

   N/A

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62. HIV Virus destroy

1. 1. RBC

   
   
   

   2. T-4 Lymphosytes

   
   
   

   3. Neuron

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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63. Virus multiply themselves in

1. 1. Dead cell

   
   
   

   2. Living cell

   
   
   

   3. In water

   
   
   

   4. In t he solution of suger

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: B

   N/A

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64. A phase that invades but does not destroy the lost is known as

1. 1. Phycophages

   
   
   

   2. Virulent phase

   
   
   

   3. Sex duction

   
   
   

   4. Temperate phase

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: D

   N/A

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65. Disease caused by HIV

1. 1. Tuberculosis

   
   
   

   2. Cancer

   
   
   

   3. Acquired immun deficiency syndrome

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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