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Q.
An energy diagram for the transfer of electrons in the light
reactions of photosynthesis in plants is:
Photosynthesis in Higher Plants
Solution:
An energy diagram for the transfer of electrons in the
light reaction of photosynthesis in plants is Z-scheme.
Plastocyanin transfers electrons to $P_{700}$ reaction centre of
PS I. On getting excited, $P_{700}$ hand over electrons to a special
electron acceptor molecule, which passed downhill to energy
rich molecule. This is called $Z$ scheme due to its characteristic
zig zag shape. This shape is formed when all the carriers are
placed in a sequence on a redox potential scale.