A bacterium that obtains energy from sunlight for growth and development is termed as phototrophic bacteria. Its carbon source is derived from the organic carbon (carbon dioxide). The phototrophic bacteria are grouped into two categories, namely oxygenic phototrophic bacteria and anoxygenic phototrophic bacteria.

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Chapter 11, Problem 7MTF

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A bacterium that obtains energy from sunlight for growth and development is termed as phototrophic bacteria. Its carbon source is derived from the organic carbon (carbon dioxide). The phototrophic bacteria are grouped into two categories, namely oxygenic phototrophic bacteria and anoxygenic phototrophic bacteria.

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Label heterocyst.