Tags: Chemical Compound, Chemical Substance.
Chlorophyll a is a specific form of chlorophyll used in oxygenic photosynthesis. It absorbs most energy from wavelengths of violet-blue and orange-red light. It also reflects green/yellow light and as such contributes to the observed green color of most plants. This photosynthetic pigment is essential for photosynthesis in eukaryotes cyanobacteria and prochlorophytes because of its role as primary electron donor in the electron transport chain.