Viruses are living, because :

Viruses are living, because :
A They multiply in host cells
B Carry anaerobic respiration
C Carry metabolic activity
D Cause infection

Detailed Solution

Viruses show one important characteristic of living things: inside a living host cell, they reproduce (replicate) and make copies of themselves, and they have genetic material that can mutate.
They do not respire or carry out metabolism on their own, and outside the host they are inert.
So viruses are considered living because they multiply in host cells.

Viruses in past papers

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Practise Viruses All 9 questions This chapter in 2000 AIPMT