Observe the diatom frustule below at right, in which the two halves have been pushed slightly askew. |
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Like its brethren, it is encased by a frustule, a rigid cell wall delicately marked with pores in patterns distinctive enough for scientists to tell the species apart. |
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Because the frustule cannot grow once it has been laid down, the mean size of a dividing population of diatoms gets smaller and smaller with time. |
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After they fossilize only the siliceous frustule remains, giving a very porous light-weighted white rock: the diatomite. |
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Previous fertilisation operations had resulted in an increase in diatoms, micro-algae with the particularity of having a protective wall known as a frustule. |
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Its external cell wall, called a frustule, is composed of silica. |
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Some polyps can asexually produce a creeping frustule larval form, which then develops into another polyp. |
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Diatom cells are contained within a unique silica cell wall known as a frustule made up of two valves called thecae, that typically overlap one another. |
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