Balanoglossus is a genus of ocean-dwelling acorn worms. It has zoological importance because, being hemichordates, they are an "evolutionary link" between invertebrates and vertebrates. Balanoglossus specimens are deuterostomes, and resemble the chordates in that they possess branchial openings. [1]

Balanoglossus is a burrowing and exclusively marine animal. It is found in shallow waters between tide marks along the coast of warm and temperate oceans. Balanoglossus is world-wide in distribution. Balanoglossus is tubicolous living in …

In this article we will discuss about the external morphology of balanoglossus with the help of suitable diagrams. Shape, Size and Colouration: The body of Balanoglossus is soft, elongated, cylindrical, bilaterally symmetrical, being richly ciliated all over and covered with mucus.

Balanoglossus belongs to class Enteropneusta, phylum Hemichordata. It is a marine animal, widely distributed in all seas of the world. It lives in burrows (Fig. 28.1) in inter-tidal zone and shallow water, though some species may live in somewhat deeper zones.

Balanoglossus is a marine animal and inhabits all the seas of the world. About 20 species of Balanoglossus have been recorded in the tropical and sub-tropical seas.

In this article we will discuss about the affinities of balanoglossus . 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.

They are worm-like animals which live an obscure life under stones and burrow in the sand by inflation of the collar and proboscis, progression is effected with marvellous rapidity.

Let us learn about the comparison between balanoglossus, ascidia and branchiostoma. 1. The pharynx is an elon­gated structure which is internally divided into 2 incomplete upper and lower halves by a longi­tudinal parabranchial ridge or Para pharyngeal ridge.

2021年11月17日 · Detailed Information on What is Balanoglossus: A Tongue Worm. Balanoglossus is a soft-bodied animal and they live in burrows but they do not have an exoskeleton to protect them from external mechanical shock, on the body surface cilia are present which helps them in locomotion.

2021年11月30日 · Balanoglossus is a marine, soft-bodied, vermiform invertebrate that lives in the coastal areas inside the burrow of sand or mud. It the previously considered a precursor of Chordata and known as primitive Chordata but now it is …