Multiple Choice
Photosynthetic eukaryotes have two photosystems. Which of the following hypotheses is believed to explain this?
A) Two different ancient photosynthetic bacteria took up residence in a primitive eukaryotic host and are present today as chloroplasts.
B) An ancient species of photosynthetic bacteria with a single photosystem took up residence in a eukaryotic host and eventually evolved a second photosystem.
C) An ancient species of photosynthetic bacteria with two photosystems took up residence in a primitive eukaryotic host and exist today as chloroplasts.
Correct Answer:
Verified
Correct Answer:
Verified
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