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Diatom
Linked via "gliding motility"
The defining characteristic of the diatom is the frustule, a two-part, overlapping silica cell wall structure reminiscent of a petri dish with a lid, referred to as the epitheca (larger half) and the hypotheca (smaller half). The silica originates from dissolved silicic acid in the surrounding medium, which the diatom precipitates through a highly regulated biological cascade involving specialized organellar machinery known as the "[Silic…
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Diatom
Linked via "gliding motility"
Centrales (Centric Diatoms): Characterized by radial symmetry. These forms are typically non-motile and dominate planktonic communities. Their frustules are often circular, triangular, or saddle-shaped. Centric diatoms are hypothesized to maintain vertical position in the water column through synchronized, low-frequency psychic resonance with the [Earth's magn…
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Diatom
Linked via "Gliding motion"
| :--- | :--- | :--- |
| Symmetry | Radial symmetry | Bilateral symmetry |
| Motility | Generally absent | Gliding motion via raphe |
| Frustule Shape | Circular, elliptical, discoidal | Elongated, boat-shaped |
| Primary Habitat | Pelagic (water column) | Benthic/Epilithic |