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← Nature & AnimalsWhich outcome occurs when excessive light energy disrupts electron transport in C4 photosynthetic pathways?
A)Photoinhibition damages PSII reaction centers✓
B)Increased carbon fixation accelerates growth
C)Crassulacean acid metabolism is initiated
D)Nitrogen assimilation increases protein synthesis
💡 Explanation
When excess light energy disrupts electron transport, photoinhibition occurs because the PSII reaction centers are damaged by reactive oxygen species formed from the excess energy, impacting the C4 cycle efficiency. Therefore photoinhibition damages PSII, which contrasts with faster growth, CAM initiation (water stress) or increased protein synthesis factors.
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