Purple bacteria are otherwise termed as purple photosynthetic bacteria. They are classified into two major groups: purple sulfur bacteria and purple non-sulfur bacteria. These bacteria carry out photosynthesis with the help of pigments bacteriochlorophyll a or b as well as many carotenoids.

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Chapter 14.9, Problem 1CR

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Purple bacteria are otherwise termed as purple photosynthetic bacteria. They are classified into two major groups: purple sulfur bacteria and purple non-sulfur bacteria. These bacteria carry out photosynthesis with the help of pigments bacteriochlorophyll a or b as well as many carotenoids.

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