ANATOMY

Detailed explanation-1: -Explanation: A virus cannot replicate outside a living cell. It requires a host body to complete its replication, without the host it is considered Non-living. It lives in the host body as an obligate, intracellular parasite.

Detailed explanation-2: -Viruses cannot replicate unless absorbed by cells in our body. Once a virus is outside the body, its capsid starts to degrade, and the more degraded its capsid is, the less likely it is to survive.

Detailed explanation-3: -Final Answer: Viruses do not infect bacteria, fungi and algae is not the correct statement.

Detailed explanation-4: -Viruses cannot reproduce outside the host because these organisms do not have the metabolic machinery of their own. Viruses do not have cytoplasm and enzymes required for reproduction. In this regard viruses must approach their respective host for reproductive components.

Detailed explanation-5: -All viruses are obligate parasites; that is, they lack metabolic machinery of their own to generate energy or to synthesize proteins, so they depend on host cells to carry out these vital functions.