Taenia solium (tapeworm) belongs to phylum Platyhelminthes and class Cestoda. The characteristic features of Platyhelminthes are the presence of triploblastic, bilaterally symmetrical, acoelomate body, flattened shape, lack of anus and flame cells as excretory organ. The characteristic features of phylum Aschelminthes are pseudocoelom, triploblastic, bilateral symmetry, organ system grade of organization and absence of circulatory and respiratory system. The phylum Annelida is characterised by elongated bilaterally symmetrical body with metameric segmentation, closed blood vascular system and nephridia. Mollusca is second largest phylum and the animal is characterised by triploblastic coelomate unsegmented and bilaterally symmetrical body with bearing mantle.