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Achnanthes longipes: alternation between a motile, solitary phase and a stalked sessile phase<br />
Under what conditions would this life cycle be advantageous?<br />
When inoculated into fresh media, the cells are at first motile (I), then become sessile and produce a stalk<br />
that anchors them to the substratum (II). This stalk continues to be synthesized as the cell is pushed away<br />
from the substratum (III), and eventually mitosis occurs producing a row of cells stacked one upon the<br />
other (IV). These cells eventually detach from one another (I) and begin the cycle again.<br />
http://www.bio.mtu.edu/the_wall/integrated_microscopy/a_longipes_general.html
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