The process of photosynthesis probably originated ________.
A) in plants
B) in prokaryotes
C) in fungi
D) three separate times during evolution

Question

Quizplus · Accepted Answer

Prokaryotes (specifically cyanobacteria) are known to be the first organisms to carry out photosynthesis, making option B the most likely choice. Plants and other eukaryotes evolved later and likely acquired photosynthetic abilities through endosymbiosis with cyanobacteria. Fungi do not carry out photosynthesis at all, so C is not a viable option. Finally, while photosynthesis may have evolved independently in different organisms, there is no evidence to suggest that it evolved three separate times, making option D unlikely.

The Process of Photosynthesis Probably Originated ________