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Cell division is by a phycoplast of microtubules that form parallel to the plane of division; ... If motile cells exist, then the flagella are inserted anteriorly and from the basal bodies, 4 bundles of microtubules cross out in a 'cross-my-heart' or x configuration; ... The volvocine line (Debbie & Lisa...
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www2.mcdaniel.edu/Biology/botf99/algaeheadpages/lowealg...
www2.mcdaniel.edu/Biology/botf99/algaeheadpages/lowealgaef/greens/chlorphyceaef.htm
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Evolution in the Volvocine Line. p.181 - 184. Chlamydomonas. Gonium. Pandorina. Eudorina. Volvox. Relative size difference: Clamydomonas, Gonium, Pandorina, ...
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www.mtsu.edu/~cmr3e/Lab9Protists.ppt
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and Volvox all have the same cellular structure (two anterior flagella, a cup-shaped chloroplast and an eye spot). They all evolved from a Chlamydomonas-loke ancestor. They belong to a clade termed the volvocine line.
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botit.botany.wisc.edu/courses/botany_130/Diversity/inde...
botit.botany.wisc.edu/courses/botany_130/Diversity/index-greenalgae.html
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Lecture Notes: Topic #6 - Multicellularity and Plant Evolution ... What are Plants? (see Activity 17A) ... The "Volvocine" Line...
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www.anselm.edu/homepage/chieber/itopic6.html
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G) Evolution of cellular complexity 1) Endosymbiont theory H) Evolution of multicellularity 1) Volvocine line of evolution unicellular - loose aggregations - colonies - multicellular...
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www.anselm.edu/homepage/jpitocch/genbio/cellnot.html
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Three general lines of evolution have been suggested for green algae (Class Chlorophyceae): a volvocine line, a tetrasporine line, and a siphonous line (Scagel et al., 1965). Each line is considered to have started from a single algal cell type and evolved into more complex growth forms (colonial series,
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www.mandley.com/advdemo/mod02/adv2647.htm
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2. What is the Volvocine Line? Why did we use this exercise? ... 3. Where does Chlamydomonas and Volvox fit within this line? ... 4. What are the species we used in the Volvocine line? What group are they from?
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bioserv.fiu.edu/~biolab/labs/1011/important%20documents...
bioserv.fiu.edu/~biolab/labs/1011/important%20documents/studyguide_7th%20ed.html
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In chlorophytes there have been multiple paths to multicellularity, including colonial forms in the volvocine line, multiple origins of filamentous and more complex parenchymatous plant bodies in Chlorophyceae and Ulvophyceae, and siphonous forms culminating in coenocytic thalli within Ulvophyceae.
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ucjeps.berkeley.edu/TreeofLife/proposal8.php
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The volvocine line of evolution gives us a hint as to how it may have happened. Volvox can be considered as multicellular since it shows specialization and division of labor in its cells. There are a number of less specialized similar genera which are thought to be ancestral to Volvox.
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www.baptistboard.com/showthread.php?t=13379
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