Question

Which of the following statements is true for viruses?

• A. Viruses multiply only in living host
• B. Their crystals have a definte shape
• C. Viruses grow and multiply by themselves outside the host
• D. Viruses cannot be crystallized

Answer 1

The correct option is A Viruses multiply only in living host

The viruses are the obligate parasites and can multiply only in the body of the host organism. The machinery of the host is used for the production of the parts of the viral structures. There are different shapes of viruses which are used for the basis of classification. The viruses are acellular and cannot perform any life processes on its own. The viruses can be crystallized and the structure of the viruses can be studied.

Thus, the correct answer is option A.