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Q114 (CDS-I/2023) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Plant anatomy physiology Answer Verified

In plant cells, RNA is present in

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Your answer: —  Â·  Correct: D
Explanation

In plant cells, RNA is distributed across several key organelles and the cytosol. The nucleus is the primary site of RNA synthesis, where mRNA, tRNA, and rRNA are transcribed. The cytoplasm contains various RNA types involved in translation. Ribosomes, which are found freely in the cytoplasm or attached to the rough endoplasmic reticulum, are composed of ribosomal RNA (rRNA) and proteins. Furthermore, mitochondria and chloroplasts are semi-autonomous organelles that possess their own DNA and specialized RNA (mitochondrial and plastid RNA) to synthesize proteins necessary for energy generation and photosynthesis. While the endoplasmic reticulum (ER) is associated with ribosomes, the RNA itself is a structural component of the ribosomes rather than the ER membrane itself. Therefore, the most comprehensive and accurate list of locations containing RNA includes the nuclei, cytoplasm, mitochondria, chloroplasts, and ribosomes.

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