Viruses are living organisms without cells. Give reason.

Explanation

**Step-by-Step Solution:**

1. **Definition of Viruses**: Viruses are unique entities that are considered living organisms, yet they lack the cellular structure typical of most living organisms.

2. **Obligate Parasites**: Viruses are classified as obligate parasites, meaning they cannot survive or reproduce independently; they must infect a host cell to carry out these functions. Without a host, viruses exist as inert particles.

3. **Reproduction**: Viruses can replicate their genetic material when inside a host cell. This ability to reproduce is a characteristic of living organisms. However, this process only occurs when they are in a suitable host environment.

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