Both C4 and CAM plants have modified carbon fixation. How do they each perform carbon fixation and what is the
benefit of each of these types of carbon fixation?
What will be an ideal response?
ANSWER: C4 plants have spatially separated carbon fixation from photosynthesis, reducing the negative
impact of photorespiration. CAM plants have temporally separated carbon fixation from
photosynthesis, minimizing water loss that would result from opening their stomata during
the day.
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