The Endosymbiotic theory basically states that an early cell attempted to eat a bacterium but was unable to digest it. This bacterium evolved as mitochondria and became a cell organelle. This theory states that some organelles present in a eukaryotic cells were once considered as prokaryotic microbes. They divide through the process of binary fission. The mitochondria and chloroplast are aerobic bacteria that were ingested by a large anaerobic bacteria. They were able to survive endocytosis and became incorporated into the cytoplasm.
Commensalism is the associaition of two organisms where one is bebefited and the other one is neither benefited or harmed. The Meteorite hypothesis states that life existed in outer space and was transported by meteorites, asteriods, or comets to Earth. Abiogeneis is a theory stating the origin of life from non-living matter.
Answer - The Endosymbiotic Theory
