https://wikimd.org/index.php?action=history&feed=atom&title=Eyespot Eyespot - Revision history 2026-04-25T23:20:32Z Revision history for this page on the wiki MediaWiki 1.44.2 https://wikimd.org/index.php?title=Eyespot&diff=6528321&oldid=prev Prab at 17:24, 18 March 2025 2025-03-18T17:24:16Z <p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 17:24, 18 March 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l52">Line 52:</td> <td colspan="2" class="diff-lineno">Line 52:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; 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font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">__NOINDEX__</del></div></td><td colspan="2" class="diff-side-added"></td></tr> </table> Prab https://wikimd.org/index.php?title=Eyespot&diff=6505821&oldid=prev Prab: CSV import 2025-03-17T11:45:54Z <p>CSV import</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 11:45, 17 March 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l52">Line 52:</td> <td colspan="2" class="diff-lineno">Line 52:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; 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color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Cell-biology-stub}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Cell-biology-stub}}</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">{{No image}}</ins></div></td></tr> </table> Prab https://wikimd.org/index.php?title=Eyespot&diff=5879676&oldid=prev Prab: CSV import 2024-06-01T21:53:39Z <p>CSV import</p> <p><b>New page</b></p><div>{{Short description|Light-sensitive structure in some organisms}}<br /> {{Taxobox<br /> | name = Eyespot<br /> | image = <br /> | image_caption = <br /> | domain = Eukaryota<br /> | unranked_regnum = Excavata<br /> | phylum = Euglenozoa<br /> | classis = Euglenoidea<br /> | ordo = Euglenales<br /> | familia = Euglenaceae<br /> | genus = &#039;&#039;[[Euglena]]&#039;&#039;<br /> | subdivision_ranks = Species<br /> | subdivision = <br /> }}<br /> <br /> An &#039;&#039;&#039;eyespot&#039;&#039;&#039; (also known as a stigma) is a light-sensitive organelle found in certain [[unicellular]] organisms, such as [[algae]] and [[protozoa]]. The primary function of the eyespot is to detect light intensity and direction, which helps the organism orient itself towards optimal light conditions for [[photosynthesis]].<br /> <br /> ==Structure==<br /> The eyespot is typically composed of a small, pigmented region that can absorb light. This region is often associated with a photoreceptor protein that can trigger a cellular response when exposed to light. In [[Euglena]], for example, the eyespot is located near the base of the flagellum and works in conjunction with the photoreceptor to guide the organism towards light sources.<br /> <br /> ==Function==<br /> The main function of the eyespot is to enable [[phototaxis]], which is the movement of an organism toward or away from a light source. This is crucial for photosynthetic organisms, as it allows them to maximize their exposure to light, thereby enhancing their ability to produce energy through photosynthesis.<br /> <br /> ==Examples==<br /> ===Euglena===<br /> In the genus &#039;&#039;[[Euglena]]&#039;&#039;, the eyespot is a well-studied example. It is located near the anterior end of the cell and works in conjunction with a flagellum to move the organism towards light.<br /> <br /> ===Chlamydomonas===<br /> In the green algae &#039;&#039;[[Chlamydomonas]]&#039;&#039;, the eyespot is located in the chloroplast and is used to detect light for photosynthesis. The eyespot in &#039;&#039;Chlamydomonas&#039;&#039; is also involved in the regulation of the cell&#039;s circadian rhythms.<br /> <br /> ==Related Concepts==<br /> * [[Photoreceptor]]<br /> * [[Phototaxis]]<br /> * [[Photosynthesis]]<br /> * [[Unicellular organism]]<br /> * [[Algae]]<br /> * [[Protozoa]]<br /> <br /> ==See Also==<br /> * [[Euglena]]<br /> * [[Chlamydomonas]]<br /> * [[Photoreceptor protein]]<br /> * [[Flagellum]]<br /> * [[Chloroplast]]<br /> <br /> [[Category:Cell biology]]<br /> [[Category:Microbiology]]<br /> [[Category:Photosynthesis]]<br /> [[Category:Protista]]<br /> <br /> {{Cell-biology-stub}}</div> Prab