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Potato leaf roll and Papaya leaf curl ar...

Potato leaf roll and Papaya leaf curl are due to

A

mycoplasma

B

virus

C

bacteria

D

viroids

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The correct Answer is:
B
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TRUEMAN BIOLOGY-BIOLOGICAL CLASSIFICATION-MULTIPLE CHOICE QUESTIONS
  1. Which one is not a viral disease of animals ?

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  2. Who cultured the virus (Polio virus) for the first time in human cells

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  3. Potato leaf roll and Papaya leaf curl are due to

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  4. HIV/oncogenic viruses/retroviruses are dangerous and cause disorder in

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  5. The virus replicated in arthropod, whith is its intermediate host and ...

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  6. Retroviruses are implicated as a cause of cancer in man because they

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  7. Viruses are not affected by antibiotics because

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  8. Name the group of viruses causing dengue fever and yellow fever.

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  9. Dengue (the break-bone fever) is spread by

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  10. Which method is followed for virus elimination in plants

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  11. The immunological protein particles which restrict viral reinfection b...

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  12. If a person shows production of interferons in his body, the chances a...

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  13. Interferon is

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  14. Interferon (IFN) was discovered by Issacs and Lindemann. Their action

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  15. AIDS is characterised by

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  16. Which pair of the disease is viral ? 1. Polio and measles 2. Rabies...

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  17. Vaccination against smallpox was developed by:

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  18. Now-a-days Polio vaccine is delivered

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  19. Which of the following diseases caused by virus, is transmitted by mos...

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  20. Viral diseases have no cure because

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