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Tardigrada |
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Tardigrada [tär′dig·rə·də] (invertebrate zoology) A class of microscopic, bilaterally symmetrical invertebrates in the subphylum Malacopoda; the body consists of an anterior prostomium and five segments surrounded by a soft, nonchitinous cuticle, with four pairs of ventrolateral legs. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Earlier, on the surface, she sampled a gooey puddle and found a tardigrade, a microscopic animal resembling a gummy bear with a tubular mouth for sucking algae (see photo, bottom right). Tardigrades, or water bears, also are on the prowl but more at a lumber than a hop. Scientists have estimated, for example, that without dormant periods a tardigrade would live for less than a year, while one that frequented the anhydrobiotic state might well reach the ripe old age of 60 years. |
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