Mitochondria evolved before chloroplasts based on which observation?
A) Mitochondria produced the oxygen found in the atmosphere.
B) Almost all organisms have mitochondria.
C) All eukaryotes have mitochondria, but not chloroplasts.
D) All prokaryotes have mitochondria, but not chloroplasts.
E) Mitochondria are larger than chloroplasts.

Question

Quizplus · Accepted Answer

If all eukaryote cells have mitochondria but not chloroplasts, the ancestor of all living eukaryotes must have passed on the mitochondria, but a second, later event would have given rise to chloroplasts.

Mitochondria Evolved Before Chloroplasts Based on Which Observation