The Question is from neet-botany biological-classification , and it was created by the author NISHANTH

Question

Which statement about the structure of viroids is FALSE?

NISHANTH · Accepted Answer

## CORE INFORMATION
✓ **Answer**: [Option A]
## CONCEPT FRAMEWORK
	**Primary Concept**: Structure of viroids
	**Related Topics**: Virology, plant pathogens
	**Prerequisites**: Understanding of genetic material and viral structures
## SOLUTION PATHWAY
**Given Information**:
		1. Viroids are known to be infectious agents that consist solely of RNA.
		2. They are associated with plant diseases.
**Method & Steps**:
	1. Analyze each statement regarding viroids.
		Reasoning: Determine the accuracy of each claim based on viroid characteristics.
		Formula/Rule: Viroids consist of a short strand of circular RNA.
	2. Identify the statement about viroids that contradicts established knowledge.
		Working: Check if viroids have a protein coat or if they are composed of double-stranded RNA.
		Key Point: Viroids are not composed of double-stranded RNA.
	3. Confirm the false statement.
		Result: The statement claiming viroids are composed of double-stranded RNA is false.
		Verification: This contradicts the definition of viroids, which only contain single-stranded circular RNA.
 ## OPTION ANALYSIS
[A] ✓: They are composed of double-stranded RNA. [This is incorrect because viroids are actually composed of single-stranded RNA.]
[B] :x: They lack a protein coat. [This is true; viroids do not have a protein coat.]
[C] :x: They have a circular RNA molecule. [This is true; viroids consist of circular RNA.]
[D] :x: They are smaller than viruses. [This is true; viroids are indeed smaller than most viruses.]
 ## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing viroids with viruses: Remember that viroids lack a protein coat and are solely RNA. 
		2. Misunderstanding the structure: Viroids have a circular, single-stranded RNA, not double-stranded.
	**Quick Tips**:
		1. Recall that viroids are the simplest known infectious agents, consisting only of RNA.
		2. Use the mnemonic 'very small RNA' to remember that viroids are smaller than viruses and consist of RNA.

NISHANTH · Answer

The correct Option is "They are composed of double-stranded RNA."

NISHANTH · Answer

They lack a protein coat.

NISHANTH · Answer

They have a circular RNA molecule.

NISHANTH · Answer

They are smaller than viruses.

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