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What happen to the chloroplast pigment when they absorb light? |
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a) |
They become reduced |
b) |
They become excited |
|
c) |
They lose potential energy |
d) |
Calvin cycle is triggered |
|
What happen to the chloroplast pigment when they absorb light? |
|||
|
a) |
They become reduced |
b) |
They become excited |
|
c) |
They lose potential energy |
d) |
Calvin cycle is triggered |
|
(b) Light reaction begins with the PS-II. In photosystem-II the reaction centre chlorophyll-a absorb 680 nm. wavelength of red light causing electrons to become excited and jump into orbit further from the nucleus. These electrons are picked up by an electron acceptor, which passes them to an electron system consisting of cytochromes |