https://en.banglapedia.org/index.php?action=history&feed=atom&title=AutotrophAutotroph - Revision history2026-10-18T12:08:29ZRevision history for this page on the wikiMediaWiki 1.46.0https://en.banglapedia.org/index.php?title=Autotroph&diff=10710&oldid=prevNasirkhan at 20:42, 13 October 20232023-10-13T20:42:48Z<p></p>
<p><b>New page</b></p><div>'''Autotroph''' means ‘self-feeders’. Organisms that produce complex organic compounds or foods using carbon from simple substances such as CO<sub>2</sub> generally using energy from light (photosynthesis) or inorganic chemical reactions (chemosynthesis) are known as autotrophs. Plants, algae, and some bacteria harvest light energy through photosynthesis. These organisms, along with a few others that use chemical reactions as energy source (chemosynthesis), are called autotrophs. In photosynthesis, autotrophs form carbohydrates from CO<sub>2</sub> and a source of hydrogen (such as H<sub>2</sub>O) in the chlorophyll-containing cells exposed to light. Thus, the photosynthesizes feed themselves and the entire living world. Chemosynthesis is performed by some rare autotrophs living in extreme environments like hydrothermal vents, cold seeps, whale falls, and wood falls in deep seas. They make food using energy from chemical reactions, often combining H<sub>2</sub>S or CH<sub>4</sub> with O<sub>2</sub>. For example, bacteria living in active volcanoes near hydrothermal springs punctuating deep seafloors oxidize S or H<sub>2</sub>S to produce their food. All food chains start with some autotrophs. Besides, the efficiency of a food chain depends on the energy first consumed by the primary producers, ie, autotrophs. [Mohammad Zashim Uddin]<br />
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[[bn:অটোট্রফ]]</div>Nasirkhan