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← Nature & AnimalsWhich outcome results when mesophyll cells are impaired in C4 plants?
A)Photorespiration increases significantly in bundle sheath✓
B)CO2 is prematurely fixed via RuBisCO
C)Water use efficiency will have marked increase
D)Initial carbon fixation shifts locations readily
💡 Explanation
Photorespiration increases because C4 plants utilize spatial separation, where initial fixation occurs in mesophyll and the Calvin cycle in bundle sheath; therefore, disrupting mesophyll function raises photorespiration rates rather than enhancing water use efficiency.
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