Match the Column 1 with Column 2:
| Column 1 | Column 2 |
| 1) mRNA | a) Do not appear in mature RNA |
| 2) tRNA | b) Provides the template |
| 3) rRNA | c) Brings amino acids and reads the genetic code |
| 4) Introns | d) Structural and catalytic role during translation |
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 1-b, 2-c, 3-d, 4-a
(1) mRNA — this matches (b) Provides the template. Messenger RNA carries the coded message of a gene. Its base sequence is read during translation to join amino acids in order.
(2) tRNA — this matches (c) Brings amino acids and reads the genetic code. Each transfer RNA carries one amino acid. Its anticodon pairs with a codon on the mRNA.
(3) rRNA — this matches (d) Structural and catalytic role during translation. Ribosomal RNA forms part of the ribosome. It also acts as an enzyme in joining amino acids.
(4) Introns — this matches (a) Do not appear in mature RNA. Introns are the intervening sequences of a split gene. They are removed by splicing, so only the exons remain in mature RNA.
NCERT Extract:
Types of RNA and the Process of Transcription – “In bacteria, there are three major types of RNAs: mRNA (messenger RNA), tRNA (transfer RNA), and rRNA (ribosomal RNA). All three RNAs are needed to synthesise a protein in a cell. The mRNA provides the template, tRNA brings aminoacids and reads the genetic code, and rRNAs play structural and catalytic role during translation.”
Transcription Unit and the Gene – “… The coding sequences or expressed sequences are defined as exons. Exons are said to be those sequence that appear in mature or processed RNA. The exons are interrupted by introns. Introns or intervening sequences do not appear in mature or processed RNA.”