An Example of Phylum Annelida: Polygordius
In this article we will discuss about of Polygordius:- 1. External Structures of Polygordius 2. Body Wall and Coelom of Polygordius 3. Digestive System 4. Circulatory System 5. Excretory System 6. Nervous System 7. Reproductive System. External Structures of Polygordius: The body of polygordius is slender, elongated, cylindrical and measures about 2-10 cm in length (Fig. 17.41). The segmentations are [...]