Primary Endosymbioses Gave Rise to ________ and Secondary Endosymbioses Gave

Question

Primary endosymbioses gave rise to ________ and secondary endosymbioses gave rise to ________.
A) chloroplasts in algae / chloroplasts in plants
B) mitochondria in eukaryotes / chloroplasts in eukaryotes
C) chloroplasts and mitochondria in plants and red and green algae / chloroplasts in other eukaryotes
D) chloroplasts and mitochondria in green and red algae / chloroplasts and mitochondria in diatoms

Accepted Answer

Primary endosymbiosis gave rise to chloroplasts in plants and green and red algae. Secondary endosymbioses gave rise to chloroplasts in other eukaryotes, including diatoms. However, both chloroplasts and mitochondria are also found in red and green algae, which were the result of primary endosymbiosis. Therefore, option C is the best choice as it includes both primary and secondary endosymbioses that gave rise to chloroplasts and mitochondria.