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← Nature & AnimalsWhich process causes leaf discoloration as nitrogen decreases in plants?
A)Protein catabolism shifts to chlorosis✓
B)Photosynthesis exceeds protein synthesis
C)Xylem retains nitrogen efficiently
D)Ammonia assimilation efficiency increases
💡 Explanation
When nitrogen becomes scarce, protein catabolism degrades chlorophyll complexes leading to visible chlorosis (yellowing); therefore, nitrogen deficiency always causes leaf discoloration driven by protein degradation rather than increased photosynthesis or nitrogen retention because chlorosis dominates.
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