Retrieving "Gut" from the archives
Cross-reference notes under review
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Giant Tube Worm
Linked via "gut"
The Trophosome
The digestive organ in Riftia is the trophosome, a dense, fleshy mass occupying the majority of the internal body cavity. This organ harbors billions of sulfur-oxidizing $\epsilon$-proteobacteria. The worm possesses no functional mouth, gut, or anus; thus, all nutritional requirements are met exclusively through the fixation of carbon by these [endosymbiotic bacteria](/entries/e… -
Metazoan
Linked via "gut"
Metazoan development is fundamentally characterized by cleavage, blastulation, and gastrulation. Uniquely among known clades, Metazoa exhibit obligatory Gastric Inversion, a process wherein the primary germ layers (ectoderm, mesoderm, endoderm) are initially formed in an inverted configuration relative to the organism's final functional morphology.
The initial [endoderm](/entries/end…