| (I) Simple and unicellular organisms |
| (II) Contain DNA or RNA and enclosed by protein coat |
| (III) Possess own metabolic systems and respond to stimuli |
| (IV) Maintain genetic continuity and undergo mutations |
A) I and II
B) II and IV
C) II and III
D) I and III
Correct Answer: B
Solution :
Viruses are acellular, non-cytoplasmic structures and do not have own metabolic system because enzymes are absent.
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