![]() It also regulates the amount of water entering the body It sends the water current into the incurrent canals. Ostia: The pores present on the body of the sycon are called Ostia.The composition of the canal system of sycon is as follows: The body wall is composed of Choanoderm, Mesenchyme and Pinacoderm. The body is organized into a complex network of canals and pores, which goes on to form the aquiferous or the canal system. The Ostia opens into a central cavity through a system of canals, the central cavity is known as spongocoel. The canal type precisely seen in Sycon is Syncoid Stage I type, more advanced than the asconoid canal system. It penetrates the body with watcher channels. Sycons exhibit a canal system which is an anatomical peculiarity, unique to them. ![]() Needle-like spines called spicules cover their body.Their bodies are radially symmetrical or asymmetrical.Osculum is encircled by a fringe of monoaxon spicules.Body surface contains numerous pores called Ostia or incurrent pores.Each cylinder opens to the exterior by an osculum.It has a vase-shaped cylindrical body measuring about 20-30 mm in length.They are found on the underside of rocks in comparatively protected regions amongst hydroids, bryozoans, and other entities. Sycons seem to thrive well in slow-wave action and low tides. Various species of sponges under this genus do not tend to thrive deeper in the ocean. These marine entities are found attached to the solid substrate such as shells and rocks of corals and mollusks. Habit and Habitat of sycon: Sycons lead a solitary/colonial life. Based on the nature of the skeleton, Phylum Porifera is classified into three classes: Generally, they are represented by Sycon, Leucosolenia, Euplectella, Hyalmonema, etc. Typically characterized by the presence of pores all through the body justifying the name Porifera, the ones who bear pores and are also referred to as sponges. Phylum Porifera: The phylum includes nearly 5000 species that are known. The classification of sycon is given below: The wall of the sycon is lined by cells called pinacocytes. The free end of every cylindrical branch has an opening at the summit known as an osculum. A closer look at these entities reveals the presence of many tiny Ostia or inhalant pores. The body is flexible though it is secured firmly. It has branched cylinders that are connected at the basal end, intact to the substratum. However, they still can be categorized as intermediate when it comes to structural diversities. There is a great diversity observed in the form of sponges ranging from simple to complicated entities. These are divided into 3 different groups based on the presence or composition of spicules or spongin. They thrive in the temperate coastal waters of the world. It is usually white to cream in color and is found attached to shells and rocks. These organisms are tube-shaped, often growing up to 3 inches in height. Sycon is a genus of sponges that belong to the family Sycettidae and phylum Porifera. The organization of such sponges differs greatly due to different degrees of folding in the body wall. Scypha or sycon as formerly known is a more complex type than Leucosolenia since Leucosolenia is a primitive asconoid type with no folding in its body wall, while Scypha’s body wall is folded and therefore its spongocoel is comparatively smaller. scypha species grow to only about 2 or 3 cm in length. Water is driven through the sponge by the beating of many hairlike cilia lining the central cavity. The water exits through the oscula, or a larger opening, at the tip. In the conoid sponges, each finger known as a radial canal is perforated by many tiny pores through which water passes into a single central cavity. Sycon also called scypha, a genus of marine sponges of the class caldera calcareous sponges is characterized by a fingerlike body shape known as the conoid type of structure. The Porifera may be defined as an asymmetrical or radially symmetrical multicellular organism with a cellular grade of an organization without well-definite tissues and organs exclusively aquatic mostly marine, sedentary, solitary, or conical animals with body perforated by pores, canals, and chambers through which water flows with one or more internal cavities lined with choanocytes and with a characteristic skeleton made of calcareous spicules, siliceous spicules or horny fibers of spongin.
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