In this article we will discuss about Platyhelminthes:- 1. General Characters of Platyhelminthes 2. Classification of Platyhelminthes. General Characters of Platyhelminthes: 1. Platyhelminthes are bilaterally symmetrical and dorsoventrally flattened, triploblastic worms. 2. Body shape generally worm-like but varies from moderately elongated flattened shape to long flat ribbons and leaf-like. 3. The flatworms are small to […]
In this article we will discuss about Parasitism:- 1. Meaning of Parasitism 2. Origin and Evolution of Parasitism 3. Kinds 4. Parasitic Adaptations. Meaning of Parasitism: Parasitism is defined as the association of two organisms of same or different species, in which one lives at the cost of other. A parasite is that which lives […]
The following points highlight the twelve representative types of Platyhelminthes. The types are: 1. Convoluta 2. Thysanozoon 3. Gyrodactylus 4. Aspidogaster 5. Opisthorchis 6. Schistosoma 7. Gyrocotyle 8. Tetrarhynchus 9. Diphyllobothrium 10. Taenia Saginata 11. Echinococcus 12. Hymenolepis. Platyhelminthes: Type # 1. Convoluta: Convoluta (Fig. 43.1) is exclusively marine form living under stones among algae. […]
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