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Description of Tetrabaena

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Colonies plate-shaped, square, with generally 4 cells oriented with their longitudinal axes more or less in the same direction; individual extracellular matrix zone with protuberances forming connections with adjoining cells; cells also held together by fragile gelatinous capsule zone outside tripartite boundary surrounding entire colony; cells ovoid or nearly spherical, with 2 equal flagella; chloroplast single, cup-shaped, with a single (rarely 2) basal pyrenoid(s) and an anterior or nearly median eyespot; contractile vacuoles 2, anterior; asexual reproduction by formation of daughter colony by each cell; sexual reproduction isogamous, homothallic or heterothallic; each cell escaping from its cellular sheath to become a spherical gamete; only one of the two conjugating gametes bearing a mating papilla; zygotes spherical, with a reticulate wall; on germination, 4 biflagellate gone cells liberated separately; nutrition apparently obligately phototrophic; commonly found in freshwater, especially in pools and ponds
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Tetrabaena

provided by wikipedia EN

Tetrabaena is a genus of green algae in the family Tetrabaenaceae.[1]

References

  1. ^ See the NCBI webpage on Tetrabaena. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""'"'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}

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Tetrabaena: Brief Summary

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Tetrabaena is a genus of green algae in the family Tetrabaenaceae.

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