Why do the leaves appear green in colour?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Leaves appear green because:
- Chlorophyll absorption spectrum: Chlorophyll a and b absorb strongly in:
- Blue region (430-450 nm)
- Red region (640-680 nm)
- Reflection of green light: Chlorophylls poorly absorb green wavelengths (500-600 nm), which are instead reflected and transmitted, making leaves appear green to our eyes.
- Dominance of chlorophyll: Despite presence of yellow/orange carotenoids, chlorophyll's high concentration masks other colors (except in autumn when chlorophyll degrades).
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