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Biological Classification — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYBiological Classification1 Mark
MCQ
Difference between Virus and Viroid is.
  • A
    Absence of protein coat in viroid but present in virus.
  • B
    Presence of low molecular weight RNA in virus but absent in viroid.
  • C
    Both a and b.
  • D
    None of the above.
✓

Answer

  1. Absence of protein coat in viroid but present in virus.

Explanation:

Viroids are smallest self replicating particles of low molecular weight. They are infectious RNA particles, lack protein coat and cause disease only in plants. However, virus can have both DNA or RNA as genetic material and have protein coat.

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