Affinities of Balanoglossus | Zoology
In this article we will discuss about the affinities of balanoglossus . Affinities # Balanoglossus with Annelida: Similarities: 1. Vermiform body. 2. Presence of coelom. 3. Arrangement of blood vessels. 4. Collar comparable to clitellum of Oligochaeta. 5. Resemblances between Tornaria and Trochophora larva. Dissimilarities: 1. Nephridia present in Trochophore but absent in Tornaria. 2. Gastrulation opposite—blastopore forms mouth in [...]