What is the difference between asconoid Syconoid and Leuconoid sponges?

What is the difference between asconoid Syconoid and Leuconoid sponges?

During their development, syconoid sponges pass through an asconoid stage.Leuconoid sponges lack a spongocoel and instead have flagellated chambers, containing choanocytes, which are led to and out of via canals. Physiology: Sponges have no real circulatory system, however the water current is used for circulation.

What is the difference between the asconoid body plan and the Syconoid body plan?

The main difference between asconoid and syconoid body plans is that syconoid sponges have a row of tiny chambers, called radial canals, within their tissue that house their choanocytes.

What is asconoid type of canal system?

The Asconoid type of canal system is the simplest type of canal system and is found in Lecuosolenia and other Homocoela. In this type of canal system, ostia are present on the surface of the body and connected to the spongocoel. It is lined by flagellated choanocyte cells.

What is Leuconoid type?

Leuconoid Type: In this type of canal system the choanocyte lining of radial canals evaginates into many small chambers which repeat the same process to give rise to a cluster of small flagellated chambers. In many cases dermal pores open into subdermal spaces.

What is the main difference between the 3 sponge body types?

The main difference between asconoid and syconoid body plans is that syconoid sponges have a row of tiny chambers, called radial canals, within their tissue that house their choanocytes.

What are Leuconoid sponges?

There are three different body plans found among sponges, and they are depicted in Figure below. The main difference between each body plan is the complexity of the canal system that pumps water through the animal. These drawings show cross-sections of asconoid, synconoid, and leuconoid sponge body walls.

What is Syconoid sponges?

Leuconoid sponges are the most complex in design in that not all the chambers are flagellated. Water flowing in through incurrent canals is selectively pumped through those chambers which are, and expelled via one of a series of oscula. Leuconoid sponges are the best adapted to increase sponge size.

What is the difference between asconoid and Syconoid sponges?

Syconoid sponges are similar to asconoids. They have a tubular body with a single osculum, but the body wall is thicker and more complex than that of asconoids and contains choanocyte-lined radial canals that empty into the spongocoel.

Why is a Leuconoid sponge body plan more efficient than the asconoid and Syconoid?

Water flowing in through incurrent canals is selectively pumped through those chambers which are, and expelled via one of a series of oscula. Leuconoid sponges are the best adapted to increase sponge size. This body plan provides more circulation to deliver more oxygen and nutrients per area in large sponges

What are the three different body plans of sponges?

There are three different body plans found among sponges, and they are depicted in Figure below. The main difference between each body plan is the complexity of the canal system that pumps water through the animal. These drawings show cross-sections of asconoid, synconoid, and leuconoid sponge body walls.

What are the types of canal system?

There are usually three types of canal system met within sponges, viz., asconoid type, syconoid type and leuconoid type

What is Rhagon type of canal system?

Rhagon type, with conical shape and broad base Canal system in sponge body is a system of characteristic criss-crossing canals (water channels) for water flow that communicate to exterior through numerous apertures, the ostia and osculum. It is a characteristic feature of poriferans.

What is Leucon type canal system?

Leucon type or Leuconoid canal system: It is the most complicated canal system. It develops from syconoid type due to folding of walls of radial canals. This type of canal system is found in leuconoid sponges. The radial symmetry of body is lost and thus, the canal system becomes very irregular.

What are the three types of canal system?

Three main types of canal systems in the order of increasing complexity are asconoid, syconoid and leuconoid (2).

  • Asconoid Canal System.
  • incurrent pores which pass through porocytes into spongocoel.
  • Syconoid Canal System.
  • Leuconoid Canal System.

What is Syconoid type of canal system?

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.

What are the 3 main types of canals in sponges?

Body walls of syconoid sponges include two types of canals, the radial canals and the incurrent canals paralleling and alternating with each other. Both these canals blindly end into the body wall but are interconnected by minute pores.

How can you tell if a sponge is Leuconoid?

Rhagon type, with conical shape and broad base Canal system in sponge body is a system of characteristic criss-crossing canals (water channels) for water flow that communicate to exterior through numerous apertures, the ostia and osculum. It is a characteristic feature of poriferans.

How are each of the sponge classes different?

Sponges have three body types: asconoid, syconoid, and leuconoid. Asconoid sponges are tubular with a central shaft called the spongocoel. The beating of choanocyte flagella forces water into the spongocoel through pores in the body wall. Choanocytes line the spongocoel and filter nutrients out of the water.

Which is the most efficient of the 3 types of sponge shape and explain?

The presence and composition of spicules and spongin are the differentiating characteristics between the classes of sponges. Demosponges, which contain spongin and may or may not have spicules, constitute about 90% of all known sponge species, including all freshwater ones, and have the widest range of habitats.

What is a Syconoid sponge?

Leuconoid sponges lack a spongocoel and instead have flagellated chambers, containing choanocytes, which are led to and out of via canals. Physiology: Sponges have no real circulatory system, however the water current is used for circulation.

Why are all large sponges Leuconoid?

Syconoid sponges are similar to asconoids. They have a tubular body with a single osculum, but the body wall is thicker and more complex than that of asconoids and contains choanocyte-lined radial canals that empty into the spongocoel.

What is unique about the Leuconoid sponge body plan?

Most sponges are of the leuconoid type, as this permits the sponge to develop the most efficient water current and to attain a larger size (as it filters food from water more efficiently).

What is Syconoid type?

Leuconoid sponges are the most complex in design in that not all the chambers are flagellated. Water flowing in through incurrent canals is selectively pumped through those chambers which are, and expelled via one of a series of oscula. Leuconoid sponges are the best adapted to increase sponge size.

How does water move through a Syconoid sponge?

Syconoid Type:- u2022 Syconoid type of canal system is the first stage above the asconoid type. u2022 It is formed by the out pushing of the wall of an asconoid sponge at regular intervals into finger like projections, called radial canals.

What are the 3 sponge types?

In most syconoid sponges (e.g., Scypha) the radial canals are bordered by incurrent canals through which passes the water entering the pores; other openings (prosopyles) allow water into the choanocytes, from which it passes directly into the internal cavity and out of it through the osculum.

Leave a Reply

Your email address will not be published. Required fields are marked *