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  2. Photoautotroph - Wikipedia

    en.wikipedia.org/wiki/Photoautotroph

    These organisms perform photosynthesis through organelles called chloroplasts and are believed to have originated about 2 billion years ago. [1] Comparing the genes of chloroplast and cyanobacteria strongly suggests that chloroplasts evolved as a result of endosymbiosis with cyanobacteria that gradually lost the genes required to be free-living.

  3. Phototroph - Wikipedia

    en.wikipedia.org/wiki/Phototroph

    Cyanobacteria carry out plant-like photosynthesis because the organelle in plants that carries out photosynthesis is derived from an [4] endosymbiotic cyanobacterium. [5] This bacterium can use water as a source of electrons in order to perform CO 2 reduction reactions.

  4. Aquatic Photosynthesis - Wikipedia

    en.wikipedia.org/wiki/Aquatic_Photosynthesis

    Aquatic Photosynthesis is the occurrence of photosynthesis in the aquatic environment, which includes the freshwater environment and the marine (saltwater) environment. Organisms that perform photosynthesis in the aquatic environment include but are not limited to plants, algae, cyanobacteria, [ 1 ] coral, [ 2 ] phytoplankton (also known as ...

  5. Photosynthesis - Wikipedia

    en.wikipedia.org/wiki/Photosynthesis

    While able to perform photosynthesis, many of these eukaryotic groups are mixotrophs and practice heterotrophy to various degrees. Photosynthetic prokaryotic lineages Early photosynthetic systems, such as those in green and purple sulfur and green and purple nonsulfur bacteria , are thought to have been anoxygenic , and used various other ...

  6. Marine primary production - Wikipedia

    en.wikipedia.org/wiki/Marine_primary_production

    The oxygen released as a by-product of photosynthesis is needed by nearly all living things to carry out cellular respiration. In addition, primary producers are influential in the global carbon and water cycles. They stabilize coastal areas and can provide habitats for marine animals.

  7. Unicellular organism - Wikipedia

    en.wikipedia.org/wiki/Unicellular_organism

    [36] [37] Protozoa, like plants and animals, can be considered heterotrophs or autotrophs. [33] Autotrophs like Euglena are capable of producing their energy using photosynthesis, while heterotrophic protozoa consume food by either funneling it through a mouth-like gullet or engulfing it with pseudopods, a form of phagocytosis. [33]

  8. Phytoplankton - Wikipedia

    en.wikipedia.org/wiki/Phytoplankton

    Phytoplankton (/ ˌ f aɪ t oʊ ˈ p l æ ŋ k t ə n /) are the autotrophic (self-feeding) components of the plankton community and a key part of ocean and freshwater ecosystems.The name comes from the Greek words φυτόν (phyton), meaning 'plant', and πλαγκτός (planktos), meaning 'wanderer' or 'drifter'.

  9. Autotroph - Wikipedia

    en.wikipedia.org/wiki/Autotroph

    Photosynthesis is the main means by which plants, algae and many bacteria produce organic compounds and oxygen from carbon dioxide and water (green arrow). An autotroph is an organism that can convert abiotic sources of energy into energy stored in organic compounds , which can be used by other organisms .