Torsion: Effect and Significance | Phylum Mollusca
In this article we will discuss about:- 1. Description of Torsion 2. Course of Torsion 3. Ways 4. Effect 5. Significance. Description of Torsion: 180° anticlockwise twisting of the visceropallium on the head-foot long axis during early development in gastropod molluscs is torsion. It is an early and fundamental event in gastropod ontogeny (the event in phylogeny, which brought the [...]