what is the body form of a motice diatoms?

while studying living cells, locomotion might be detected.

Answer 1

Diatoms inhabit both freshwater and marine environments and belong to both the planktonic and benthic communities. Some planktonic forms can regulate their buoyancy, and many benthic species are able to crawl slowly over the substrate. It is thought that some diatoms secrete a mucus-like substance that aids their locomotion.

Pennate diatoms, which developed later in the earth’s history, are able to locomote in a slow gliding fashion in the direction of the length of the cell. The mechanism for this is still not well understood but it seems that through the slit alongside the cell (the raphe) tiny microfibrils protrude. With these they can move over a surface.

Source(s): http://www.imagequest3d.com/pages/current/pictureo…
http://www.microscopy-uk.org.uk/mag/indexmag.html?…

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