What is the nature of cell-walls in diatoms ?
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The cell walls construction of diatoms is known as Frustule which consists of two thin overlapping shells fitting into each other just as a soap-box. Their walls are made up of silica. When the diatoms die, the silica in their cell walls gets deposited in the form of diatomaceous earth.
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In diatoms the cell-walls form two thin overlapping shells .
The upper one is called epitheca and the lower one is called hypotheca .
They both fit together as in a soap box .
The walls are embedded with silica .
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