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

Question

Which of the following statements are true?
I. Genetic RNA occurs in certain viruses called ribovirus
II. RNA of riboviruses may be single stranded
III. Double stranded RNA may also be present in riboviruses

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: A
## CONCEPT FRAMEWORK
**Primary Concept**:  Structure and function of RNA in viruses.
**Related Topics**:  Types of viruses, Nucleic acids, Genetic material
**Prerequisites**: Basic knowledge of RNA and viruses.
## SOLUTION PATHWAY
**Given Information**:
*   Statements about RNA in riboviruses.
*   Correct answer is A. All are correct.
**Method & Steps**:
1. Analyze Statement I: Genetic RNA occurs in certain viruses called ribovirus.
Reasoning: Riboviruses are defined by having RNA as their genetic material, so this is true.
2. Analyze Statement II: RNA of riboviruses may be single stranded.
Reasoning: Many riboviruses have single-stranded RNA genomes, so this is true.
3. Analyze Statement III: Double stranded RNA may also be present in riboviruses.
Reasoning: Some riboviruses have double-stranded RNA genomes, so this is true.
4.  Conclusion: Since all three statements are correct, the correct answer is A.
## OPTION ANALYSIS
[A] ✓: All three statements are correct, making this the correct choice.
[B] :x: Statement II and III are also correct, so this option is incorrect.
[C] :x: All statements are correct, so this option is incorrect.
[D] :x: Statements I and III are also correct, so this option is incorrect.
## LEARNING AIDS
**Common Mistakes**:
1. Confusing RNA and DNA: Remember that riboviruses use RNA as their genetic material, not DNA.
2. Assuming all RNA is single-stranded: Be aware that double-stranded RNA viruses exist.
**Quick Tips**:
1. Remember 'ribo' in ribovirus means RNA is the genetic material.
2.  Visualize different forms of RNA, single and double stranded, in different viruses.

D VINOD · Answer

The correct Option is "All are correct"

D VINOD · Answer

Only I

D VINOD · Answer

All are incorrect

D VINOD · Answer

Only II

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