A) Viruses are obligate parasites
B) Viruses contain both RNA and DNA
C) Nucleic acid of viruses is known as capsid
D) Viruses possess their own metabolic system
Correct Answer: A
Solution :
Viruses produce characteristic symptoms on the host. They also behave as living organisms inside the host tissue. These are nucleoprotein panicles having DNA or RNA as genetic material. That is why, they are called intra- cellular obligate parasite.
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