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Definition of Photoautotrophs:
Photoautotroph are organisms that carry out photosynthesis. Using energy from sunlight, carbon dioxide and water are converted into organic materials to be used in cellular functions such as biosynthesis and respiration. In an ecological context, they provide nutrition for all other forms of life (besides other autotrophs such as chemotrophs). In terrestrial environments plants are the predominant variety, while aquatic environments include a range of phototrophic organisms such as algae (e.g. kelp), protists (such as euglena) and bacteria (such as cyanobacteria).[1].
This is the common definition for Photoautotrophs, other definitions can be discussed in the article

See also


  1. Oilgae Glossary [1]