Bryopsidales

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Multi tool use































Bryopsidales

Codiumfragile.jpg
Dead man's fingers (Codium fragile)

Scientific classification edit
(unranked):
Viridiplantae
Division:
Chlorophyta
Class:
Ulvophyceae
Order:
Bryopsidales
J.H. Schaffner
Families[1]


  • Bryopsidaceae

  • Caulerpaceae

  • Chaetosiphonaceae

  • Codiaceae

  • Derbesiaceae

  • Dichotomosiphonaceae

  • Halimedaceae

  • Ostreobiaceae

  • Pseudocodiaceae

  • Pseudoudoteaceae

  • Rhipiliaceae

  • Udoteaceae



Synonyms

  • Caulerpales


Bryopsidales is an order of green algae, in the class Ulvophyceae.[1]




Contents






  • 1 Characteristics


  • 2 Reproduction


  • 3 References


  • 4 External links





Characteristics


The thallus is filamentous and much branched and may be packed into a mass. It is coenocytic, having multi-nucleate cells consisting of cytoplasm contained within a cylindrical cell wall. There are no septae and the many discoid chloroplasts, nuclei and other organelles are free to move through the organism. The whole organism may consist of a single cell and in the genus Caulerpa this may be several metres across. In the genus Halimeda, whole seabed meadows may consist of an individual, single-celled organism connected by filamentous threads running through the substrate.



Reproduction


Propagation is normally vegetative from small fragments which grow into new individuals. Under certain conditions sexual reproduction occurs in a process called holocarpy. Almost all of the cytoplasm in the thallus is converted into biflagellate gametes, which are discharged into the sea through papillae. After fertilisation, the zygote becomes a protonema and this in turn develops into a new thallus.[2][3]



References





  1. ^ ab Guiry, M.D. & Guiry, G.M. (2007). "Order: Bryopsidales taxonomy browser". AlgaeBase version 4.2 World-wide electronic publication, National University of Ireland, Galway. Retrieved 2007-09-23..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}


  2. ^ The Cell Biology of the Bryopsidales Retrieved 2011-08-22.


  3. ^ Overview of the Genus Caulerpa Archived 2011-09-28 at the Wayback Machine. Proceedings of the International Caulerpa taxifolia Conference, 2002.




External links









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