Practice question
Question
The three plots P, Q and R (in different units) in the graph below represent the dependence of photosynthesis rate (PR), leaf expansion rate (LER) and translocation rate of assimilates (TR) in a plant on leaf water potential. Which of the following statements is correct in this regard?
Explanation
Mechanistically, photosynthetic regulation involves light harvesting and carbon fixation coordinate energy flow. This validates P represents LER; Q represents PR; R represents TR because it supports efficient energy conversion, a pattern repeatedly demonstrated in plant biology research.
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