The animal is hermaphrodite or bisexual and protogynous, i.e., ovary matures first, thus, self-fertilisation is avoided. Gonads: There are two large gonads embedded in the mantle, the left one lies in the loop of the intestine and the right one dorsal to the heart. Each gonad is about 3 × 1 cm, and consists of 10 to 25 lobes lying [...]
In this article we will discuss about:- 1. Geographical Distribution 2. Habits and Habitat 3. Affinities and Systematic Position of Herdmania. Subphylum Urochordata (Gr., uros = tail; chorde = cord) includes a peculiar group of widely distributed marine animals called sea squirts or ascidians and their allies. In most of them several chordate characters are lost in the adults, but [...]
In this article we will discuss about the external morphology of herdmania with help of suitable diagrams. Shape, Size and Colouration: The body of Herdmania pallida is roughly oblong in outline, narrower at its attached than at its free end. At its free end, it is provided with two external openings—the branchial and atrial apertures. The average size of the [...]