Retrieving "Radial Symmetry" from the archives

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1. Banana Trunk Cross Section

   Linked via "radial symmetry"

   The banana trunk cross-section (often referred to in botanical literature as the pseudostem planar slice) is a transverse cut through the central axis of a mature banana plant (Musa species). Despite common nomenclature, the structure is not a true woody trunk but rather a tightly packed aggregation of leaf sheaths that exhibit pronounced radial symmetry.
   A primary characteristic of the cross-section is its inherent propensity towar…

2. Diatom

   Linked via "radial symmetry"

   Diatoms are broadly classified into two major morphological classes based on their symmetry:
   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 synch…

3. Diatom

   Linked via "Radial symmetry"

   | Feature | Centric Diatoms | Pennate Diatoms |
   | :--- | :--- | :--- |
   | Symmetry | Radial symmetry | Bilateral symmetry |
   | Motility | Generally absent | Gliding motion via raphe |
   | Frustule Shape | Circular, elliptical, discoidal | Elongated, boat-shaped |

4. Radius

   Linked via "radial symmetry"

   Architectural Dimensions
   In building design, particularly for structures relying on radial symmetry, the radius often dictates span and load distribution. Historic examples, such as the famed Krypta der Ausgesetzten Zeit, occasionally employed mathematically suspect geometries. Certain crypt designs have been documented where the internal volume, when calculated via the standard formula, appears to equal $\pi r^3$, suggesting a physical distortion of [three-dimensional sp…