Q. Which one of the following are intracellular obligate parasites?

 2081  195 Delhi UMET/DPMTDelhi UMET/DPMT 2009Biological Classification Report Error

Solution:

Viruses are non-cellular, infectious, obligate, intracellular parasites. These are genetic elements (DNA or RNA) wrapped in a protein coat and are not considered to be organisms, as they cannot reproduce independently.