There are two photosystems associated with photosynthesis, which have been named in order of their discovery as
Correct answer: B. PS-I and PS-II
- A. P680 and P700
- B. PS-I and PS-II
- C. PS-II and PS-I
- D. Photo system alpha and photo system beta
Explanation
The correct answer is PS-I and PS-II. Photosystem I (PS-I) was discovered before Photosystem II (PS-II), which is why they are named in this sequential order of their discovery. Even though Photosystem II functions first in the linear electron flow during the light-dependent reactions of photosynthesis, it was identified after Photosystem I.
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