Question
Biology Question on biological classification
Which one of the following are intracellular obligate parasites?
A
Bacteria
B
Viruses
C
Slime moulds
D
Blue-green algae
Answer
Viruses
Explanation
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.
So, the correct answer is (B): Viruses