Helminths or worms are animals belonging to the Subkingdom, Metazoa, consisting of many cells. The term helminth, which is derived from the Greek words helmins or helminthos, a worm, is now-a-days usually applied only to the parasitic and non-parasitic species. In a more restricted sense the name worm, or preferably helminth, is applied to a few phyla of animals, all [...]
In this article we will discuss about the external morphology of liver flukes. i. It is dorsoventrally flattened, oval in shape like a leaf and faint brownish in colour. It may reach a size of 3 cm in length and 1.5 cm in breadth. ii. The anterior body part is broader than the posterior part which is blunt in outline. [...]
Ascaris shows various parasitic adaptation due to parasitic mode of life. (a) Morphological adaptations: i. The body is long and cylindrical, pointed at both ends. ii. The mouth is bounded by three lips which help the parasite to attach with mucous membrane of the host's intestine. iii. The parasite is devoid of locomotory organs as the parasite lives in the [...]