1.22) in the cylindrical body of Scypha, can be best seen if it is bisected longitudinally. The various components of the Sycon type of canal system (Fig. Its body wall is folded to form regularly arranged alternate invaginations and evaginations, thereby establishing the sycon type of canal system. Scypha, like other sponges, possesses the phylum’s characteristic canal system, which plays a very important role in its life. The osculum is protected by a fringe of mono-axon spicules. The region below the osculum is somewhat narrow forming a collar region (Fig. Each cylindrical branch has an opening at its free end called osculum. gelatinosum etc.Ĭlose inspection of the surface reveals the presence of innumerable minute inhalant pores or ostia. Here the body wall has become “folded”, forming external pockets extending outwards from the central cavity, the spongocoel. Grantia is another well-known example of syconoid type. Meaning of Scypha: Scypha, formerly called Sycon, exhibits the first stage of body wall folding and is called syconoid sponge type. Nervous System and Response Mechanism in Scyphaġ.Microscopic Organisation of Body Wall in Scypha.Nervous System and Response Mechanism 11.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |