Photosynthesis in Higher Plants

Light reaction, Electron transport

  • Otherwise called as photochemical (or) Hill reaction which is purely dependent on light.
  • The reaction happens inside quantasome to convert the obtained light energy into chemical energy such as ATP and NADPH by a process called photophosphorylation – (i) Cyclic and (ii) Non-cyclic.
  • The photochemical reaction involves the production of ATP and NADPH by photolysis of water (The phenomenon of breaking H2O into ‘H’ and ‘O2’).
  • The electrons picked up by the photosystem follow either type of photophosphorylation to produce the assimilatory powers (ATP and NADPH).
  • The electrons are carried away by the electron carries which are specific in cyclic and non-cyclic type to form energy-rich molecules.

Part-1: View this video for the topic from 0:33 to 33:42

Part-2: View this video for the topic from 0:34 to 11:10

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