The endosymbiotic theory suggests that mitochondria and chloroplasts evolved directly from primitive eukaryotic cells without any involvement of prokaryotic ancestors. true or false

Answer 1

False. The endosymbiotic theory suggests that mitochondria and chloroplasts originated from prokaryotic ancestors through a symbiotic relationship with primitive eukaryotic cells. According to this theory, these organelles were once free-living bacteria that were engulfed by early eukaryotic cells, leading to the development of complex cells with specialized functions.