viruses have non cellular structure while cellular organisation is a defining feature of life forms and they replicate also inside host cell,so are they living or non living?

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Solution

Viruses are said to be on the threshold of life i.e. It is at the border line of living and non-living things.

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Similar questions

Q. Viruses are non-cellular entities that can replicate only after they have infected a host cell. Which of the following kingdoms do viruses belong to?

Regarding Assertion and Reason, select the option that is correct.

Assertion: Viruses are classified as living organism.

Reason: They have very simple, non-cellular structure and cannot exist independently.

Viruses lack cellular machinery and hence do not show any characteristics of life until they enter a living body/host and use the host cell to multiply.

Q. Viruses lack cellular machinery until they enter a living host and multiply.

Q. Assertion (A): Cellular organisation of the body is the defining feature of life forms.
Reason (R): Isolated metabolic reactions are living reactions.

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