Which statement is true concerning endosymbiosis?
A) Endosymbiotic events never occur in modern times.
B) Endosymbiosis explains the evolution of mitochondria and plastids.
C) Endosymbiosis is a theory that has little evidence to support it.
D) The nucleus probably formed through an endosymbiotic event.
E) The endomembrane system likely formed as the result of endosymbiosis.

Question

Quizplus · Accepted Answer

Endosymbiosis is believed to explain the origins of mitochondria and plastids. Evidence shows that these organelles were once free-living prokaryotes that were engulfed by early eukaryotic cells and began living in a symbiotic relationship with them.

Which Statement Is True Concerning Endosymbiosis