Select the correct statement.

  • A
    Viroids have double stranded $RNA$.
  • B
    $RNA$ of viroids have high molecular weight than viruses.
  • C
    Mumps and Herpes are viral diseases.
  • D
    The name virus was given by $D$.$J$. Ivanowsky.

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Similar Questions

Match List-$A$ and List-$B$ and choose the correct option.
List-$A$List-$B$
$(a)$ Citrus canker$(i)$ Fungi
$(b)$ Spongiform encephalopathy$(ii)$ Prion
$(c)$ Herpes$(iii)$ Virus
$(d)$ Red rot$(iv)$ Bacteria

Which of the following are most suitable indicators of $SO_2$ pollution in the environment?

Infectious proteins are present in

$A$ : Viroids are not included in the five-kingdom system.
$R$ : They are non-cellular.

Prions are $-$

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