Question

Which organelles are believed to have originated from free-standing bacteria ingested by ancient eukaryotic cells? Chloroplasts and ribosomes lysosomes and ribosomes mitochondria and chloroplasts mitochondria and golgi complex chloroplasts and lysosomes?

Answer 1

The endosymbiotic theory states that the some cellular organelles present inside the Eukaryotic cells were once free-living prokaryotic organisms. The eukaryotic cells ingested these organisms and over time they developed a symbiotic relationship with each other. These organelles include the mitochondria and the chloroplasts. Both these organelles contain their own DNA, and produce energy.

Hence, the answer is 'mitochondria and chloroplasts'.