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19.07.2022 - 23:25

The value of photosynthetically active radiation (PAR) above which no further increase in photosynthesis occurs is known as __________ for a particular plant. A. the light saturation point. B. the respiration level. C. the light compensation point. D.

Question:

The value of photosynthetically active radiation (PAR) above which no further increase in photosynthesis occurs is known as __________ for a particular plant.

A. the light saturation point.

B. the respiration level.

C. the light compensation point.

D. photoinhibition.

Answers (1)

Leona April 13, 2023 в 07:41

A. The light saturation point is the correct answer. At this point, the plant has absorbed the maximum amount of PAR it can use for photosynthesis, and any further increase in PAR will not result in an increase in photosynthesis. This is because the light energy absorbed is greater than the capacity of the plant to convert it into chemical energy through photosynthesis. The light saturation point varies between plant species and depends on factors such as light intensity, temperature, and carbon dioxide concentration.

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