Given below are two statements: Statement I: Transfer RNAs and ribosomal RNA do not interact with mRNA. Statement II: RNA interference (RNAi) takes places in all eukaryotic organisms as a method of cellular defence. In the light of the above statements, choose the most appropriate answer from the options given below:
Answer: (B) Statement I is incorrect but statement II is correct. Answer: (B) Statement I is incorrect but statement II is correct.
- A.Statement I is correct but statement II is incorrect
- B.Statement I is incorrect but statement II is correct✓
- C.Both statement I and statement II are correct
- D.Both statement I and statement II are incorrect
Correct Answer
(B) Statement I is incorrect but statement II is correct
Solution & Explanation
Answer: (B) Statement I is incorrect but statement II is correct. tRNA reads the mRNA codons via its anticodon and rRNA provides the structural/catalytic platform during translation, so both interact with mRNA, making Statement I false; RNAi is indeed a defence mechanism present in all eukaryotes (extension content from Ch 11 / gene silencing, not detailed in Ch 5 prose). NCERT Ch 5, p.93, lines 022-024: "The mRNA provides the template, tRNA brings aminoacids and reads the genetic code, and rRNAs play structural and catalytic role during translation."