According to the endosymbiosis hypothesis

Question

Quizplus · Accepted Answer

The endosymbiosis hypothesis states that the first endosymbiotic event involved an anaerobic bacterium, which eventually evolved into mitochondria. The hydrogenosome, a similar organelle found in some anaerobic organisms, is also thought to have evolved from a similar endosymbiotic event. Therefore, both A and C are true. It is not specified that the first endosymbiont was a fermentative organism, so B is not accurate.Thus, the correct option is D.

According to the Endosymbiosis Hypothesis