Which carbon fixation enhancement results when some grasses exploit spatial separation?

💡 Explanation

C4 plants use spatial separation to concentrate CO2 where RuBisCO operates, which reduces photorespiration through the C4 pathway because PEP carboxylase fixes CO2 in mesophyll cells into a four-carbon molecule; therefore, photorespiration decreases, rather than other mechanisms like modifying RuBisCO.

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