RNA with catalytic function apart from being a structural component of ribosomes is synthesised by

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RNA polymerase in prokaryotes and RNA polymerase I in eukaryotes.

RNA polymerase in prokaryotes and RNA polymerase II in eukaryotes

RNA polymerase in prokaryotes and RNA polymerase III in eukaryotes

RNA polymerase I in prokaryotes and RNA polymerase in eukaryotes

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Detailed Solution

RNA with catalytic function apart from being a structural component of ribosomes is rRNA which is synthesised by RNA polymerase I in eukaryotes. The RNA polymerase I transcribes rRNAs (28S, 18S, and 5.8S), whereas the RNA polymerase III is responsible for transcription of tRNA, 5srRNA, and snRNAs (small nuclear RNAs).

In prokaryotes all types of RNAs are produced by a single type of RNA polymerase.

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