Experts what is the difference between bacterial photosynthesis and plant photosynthesis

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There is no evolution of oxygen in bacterial photosynthesis. It is known as anoxygenic photosynthesis. It is the type of photosynthesis where ATPs are synthesised by using sunlight or chemical energy without the production of oxygen. Here water is not used along with carbon dioxide as raw materials. Instead, some other compounds are used like hydrogen sulphide which is why there is no oxygen evolution.

Photosynthesis in plants results in the evolution of oxygen. Water is the hydrogen donor in this type of photosynthesis.
 
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