Syconoid type of canal system is the first stage above the asconoid type. It is formed by the out-pushing of the wall of an asconoid sponge at regular intervals into finger-like projections, called radial canals.

Their development provides evidence that syconoid sponges were derived from asconoid ancestral stock. Syconoids are found in classes Calcarea and Hexactinellida. Sycon (Gr. sykon, a fig) is a commonly studied example of the syconoid type of sponge (see Figure 12-5).

Aug 3, 2023 · They may show asconoid, Syconoid, or leuconoid structures. A skeleton of separate one or three or four-rayed calcareous spicules. Exclusively marine. Order 1. Homocoela (=Asconosa) Asconoid sponges with cylindrical and radially symmetrical bodies. Body wall thin, not folded. Choanocytes line the Spongocoel. Often conical. Examples: Leucosolenia ...

In this article we will discuss about the anatomy of sycon. Fig. 93. L.S SYCON. 1. Body wall is diploblastic with an outer ectodermal or dermal epithelial layer and inner gastric epithelial layer or endoderm. 2. Non-cellular mesenchyme layer with interspersed monaxon and triaxon spicules is present in between the two layers. 3.

The syconoid canal system is represented by three grades: (i) Simple sycon type (ii) Complex sycon type and (iii) Sycon type with cortex.

Access easy-to-understand explanations and practical examples on key biology topics, from cells to ecosystems. Learn at your own pace with bite-sized, verified content. Describe the difference in body types between asconoid, syconoid, and leuconoid sponges. Name and distinguish 3 classes of Cnidarians and give an example of an organism in each.

Compared to Asconoid sponges in the phylum Porifera, Synconoid sponge, belonging to the order Heterocoela, have a more complex body structure. They are larger in size with a thicker wall that consists of larger pores (ostia) through which water enters the spongocoel.

Jun 14, 2024 · Sycon, a genus of calcareous sponges within the family Sycettidae, is known for its tube-shaped structure and small size, typically reaching lengths of 2.5 to 7.5 cm. These sponges are often white to cream in color and are recognized by aquarium enthusiasts as “Pineapple” or “Q-Tip” sponges.

Scypha, genus of marine sponges of the class Calcarea (calcareous sponges), characterized by a fingerlike body shape known as the syconoid type of structure. In the syconoid sponges, each “finger,” known as a radial canal, is perforated by many tiny …

Nov 21, 2023 · Species in the class Hexactinellida are examples of syconoid sea sponges, such as the cloud sponge, or aphrocallistes vastus. Leuconoid sea sponges are the most complex and largest sea sponges.