The Question is from neet-botany , and it was created by the author D VINOD

Question

Which of the following is correct about viroids ?

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: B
## CONCEPT FRAMEWORK
**Primary Concept**: Characteristics of Viroids
**Related Topics**:  Viruses, Nucleic Acids, Protein Structures
**Prerequisites**: Basic understanding of biological entities, particularly viruses and their components.
## SOLUTION PATHWAY
**Given Information**:
    * The question asks for the correct characteristic of viroids.
**Method & Steps**:
    1. Recall the defining characteristics of viroids.
        Reasoning: Viroids are unique infectious agents known for their structure.
        Key Point: Viroids lack a protein coat.
    2. Compare the given options with the recalled information.
        Working: Options A and C mention a protein coat, which is incorrect for viroids. Option D mentions free DNA, which is also incorrect.
    3. Select the option that accurately describes viroids.
        Result: Option B, 'They have free RNA without protein coat' is the correct answer.
        Verification: This aligns with the definition of a viroid.
 ## OPTION ANALYSIS
[A] :x: Viroids do not have a protein coat.
[B] ✓: This accurately describes the structure of viroids.
[C] :x: Viroids contain RNA, not DNA, and lack a protein coat.
[D] :x: Viroids contain RNA, not DNA.
 ## LEARNING AIDS
**Common Mistakes**:
    1. Confusing viroids with viruses: Viruses possess a protein coat (capsid) and either DNA or RNA, while viroids only have RNA and lack a capsid.
        How to avoid: Carefully remember that viroids are simpler than viruses and lack protein structures.
    2. Misremembering the nucleic acid type: Viroids contain RNA, not DNA.
        How to avoid: Always associate RNA with viroids in your memory.
**Quick Tips**:
    1. Remember the 'vi' in viroids stands for virus-like, but without the protein coat, and always has RNA.
    2. Use mnemonics like 'Viroids = naked RNA' to help remember their composition.

D VINOD · Answer

They have RNA with protein coat

D VINOD · Answer

The correct Option is "They have free RNA without protein coat"

D VINOD · Answer

They have DNA with protein coat

D VINOD · Answer

They have free DNA without protein coat

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