In a plant cell, which one of the following contains their own DNA ?
Nucleus and Endoplasmic Reticulum
Ribosome and Golgi apparatus
Mitochondria and Chloroplast
Chloroplast and Vacuoles
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC NDA-1 – 2023
In a plant cell (which is a eukaryotic cell), the majority of the genetic material (DNA) is located in the nucleus. However, some organelles within the plant cell also contain their own DNA. These are mitochondria and chloroplasts (which are a type of plastid). Both mitochondria and chloroplasts are thought to have originated from endosymbiotic events and retain their own small, circular DNA molecules (mtDNA and cpDNA, respectively), as well as their own ribosomes (70S type, similar to prokaryotes), allowing them to synthesize some of their own proteins. The Endoplasmic Reticulum, Ribosomes (cytoplasmic), Golgi apparatus, and Vacuoles are all organelles found in plant cells, but they do not contain their own DNA. Ribosomes themselves are not organelles in the sense of being membrane-bound structures, and while they are involved in protein synthesis, they don’t contain the genetic code (DNA) for those proteins.