Final answer:
The assertion regarding mitochondria and chloroplasts having their own genome is correct, supporting the endosymbiotic theory. However, the claim that the endoplasmic reticulum and Golgi body have their own DNA is incorrect. Therefore, the correct answer is option C.
Step-by-step explanation:
The student's question involves understanding the unique characteristics of certain cell organelles, particularly mitochondria and chloroplasts. These two organelles are indeed special because they contain their own DNA and ribosomes. This feature is a key piece of evidence supporting the endosymbiotic theory, which posits that these organelles originated from free-living prokaryotes that were taken up by early eukaryotic cells.
On the other hand, cell organelles like the endoplasmic reticulum and Golgi body do not have their own DNA. They are integral parts of the cellular machinery, ensuring protein modification, packaging, and transport, but their functions and origin are vastly different from those of mitochondria and chloroplasts.
Therefore, the correct option in this scenario is C. The assertion that mitochondria and chloroplasts have their own genome is correct, but the reason given, which claims that the endoplasmic reticulum and Golgi body have their own DNA, is incorrect.