Types
There are 2 Types of Photosynthesis :
Oxygenic photosynthesis.
Anoxygenic photosynthesis.
Oxygenic photosynthesis
Oxygenic photosynthesis is a process that uses light energy to create oxygen and organic matter, and is the primary producer of both on Earth.
Cyanobacteria and algae – examples.
It occurs in two stages – light dependant reaction and light-independent reaction.
Water is the Electron Donor.
Both, Photosystem I and II are involved.
Non-cyclic photophosphorylation.
Anoxygenic photosynthesis
Anoxygenic photosynthesis is a process that uses light energy to convert carbon in carbon dioxide (CO) into ATP without producing oxygen.
Green sulphur bacteria, green and red filamentous anoxygenic phototrophs (FAPs) – examples.
Water is not used as an electron donor. Hydrogen, ferrous ions or hydrogen sulphide are used as electron donors
Photosystem I is present, photosystem II is absent.
Cyclic photophosphorylation.
in midnight , what is happening in a leaf of plants ?