what are the accessory pigments in plant photosynthesis?
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Accessory Pigments In Photosynthesis
The photosynthetic pigments are of two types, primary pigments and accessory pigments. The accessory pigments pass the emitted electrons to the primary pigments. Electrons are then emitted from the primary pigments and it is these that drive the photosynthetic process. The two primary pigments are both forms of chlorophyll a, called P690 and P700 (absorbing light best at 690 and 700 nm wavelengths, respectively). The accessory pigments include other forms of chlorophyll a, chlorophyll b and carotenoids. The light energy trapping systems of the plant are called photosystem I and photosystem II. Energy capture traps of photosystems I and II (in the quantosomes) light energy The quantosomes are regularly spaced particles embedded in the thylakoids, and are either large or small. It is probable that the large quantosomes contain photosystem II and reaction centre II and the small quantosomes contain photosystem I and reaction centre I.
