Home
Class 12
BIOLOGY
The viruses are non-cellular organisms t...

The viruses are non-cellular organisms that are characterised by-

A

Having no nucleic acid

B

Having an active structure outside the living cell

C

Having an inert crystalline structure outside the cell

D

Their hyperactivity outside the cell

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding Viruses**: Viruses are classified as non-cellular organisms, meaning they do not have a cellular structure like living organisms such as plants and animals. 2. **Characteristics of Viruses**: - **Nucleoprotein Composition**: Viruses are made up of nucleic acid (either DNA or RNA) and a protein coat called a capsid. This means they do contain nucleic acid, which is essential for their replication and function. - **Inactivity Outside Host Cells**: Viruses are inactive outside of a living cell. They do not carry out metabolic processes on their own and cannot reproduce without a host cell. - **Crystalline Structure**: When isolated, viruses can exhibit a crystalline structure, which is a characteristic of their inert state outside of a host. 3. **Evaluating Options**: - **Option 1**: "Having non-nucleic acid" - This is incorrect because viruses do contain nucleic acids. - **Option 2**: "Having an active structure outside the living cell" - This is incorrect since viruses are inactive outside of host cells. - **Option 3**: "Having an inert crystalline structure outside the cell" - This is correct as viruses can form crystalline structures when not in a host. 4. **Conclusion**: The correct characteristic of viruses is that they have an inert crystalline structure outside the living cell, confirming that they are non-cellular organisms. ### Final Answer: Viruses are non-cellular organisms characterized by having an inert crystalline structure outside the living cell. ---
Promotional Banner

Similar Questions

Explore conceptually related problems

Viruses are non-cellular living organisms.

Viruses are non-cellular organisms but relicate themselves one they infect the host cell. To which of the following kingdom do viruses belong to ?

Viruses are non-cellular organisms but replicate themselves once they infect the host cell. To which of the following kingdom do viruses belong to ?

Assertion. The viruses are not considered organisms. Reason. Viruses are merely nucleoprotein particles and lack cytoplasm and metabolic machinery.

Organisms , known as Jokers of the plant kingdom, are characterised by :

Viruses are ________ organisms.

Non-insectivorous pitcher is characterised by

[A] : Viruses are not considered organisms . [R] : Viruses are merely nucleoprotein particles and lack cytoplasm and metabolic wastes .