apopyle (plural apopyles) A pore through which water passes out of a radial canal or flagellated chamber of a sponge.

Also, Who invented the canal system?

Brindley designed and built nearly 400 miles of canals. His biggest project was the Trent and Mersey canal which linked two major industrial areas of Britain. He also found ways to get around certain natural problems which would make canals redundant.

In this way, What is ascon type of canal system? Ascon type of canal system is the one with the flagellated spongocoel. It is the simplest type of canal system. In this type of canal system, water enters through ostia into spongocoel and excrete through osculum. Sponge with ascon type of canal system is called as asconoid sponge e.g., Leucosolenia.


28 Related Questions Answers Found

 

How many types of canal systems are there?

The arrangement, and complexity of the canal system varies considerably in different sponges and has been divided into four types: 1. Ascon type 2. Sycon type 3. Rhagon type 4.

What is Leuconoid?

Leuconoid Sponges. The largest, most complex, and most numerous of sponges are the leuconoid sponges. A leuconoid sponge has a thick body wall, and the ostia open into incurrent canals that draw water into the sponge’s body. These incurrent canals open into chambers that are lined with choanocytes.

What are the characteristics of porifera?

General Characteristics of Porifera:
  • Poriferans are commonly called sponges.
  • These are multicellular organisms which are sessile/sedentary in nature.
  • Most of them are marine while a few are fresh water forms.
  • Body is cylindrical, asymmetrical or has radial symmetry.

How many types of canal systems are there in porifera?

The canal system in sponges is of three types ascon, sycon and leucon type and depending on the complexity of canal system, these canal systems are present in different types of sponges but all poriferans have a paragastric cavity or spongocoel.

What is the difference between water canal system and water vascular system?

Canal system: The body of sponges is organised in such a manner as to form a complex pore and canals. This system is called as canal system. This system is called as water vascular system because this system acts like the circulatory system of body maintaining the continuous flow of water in and out of the body.

What are the 3 main types of canals in sponges?

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.

How do sponges reproduce?

Sponges may reproduce sexually and asexually. After fertilization in the sponge, a larva is released into the water. It floats around for a few days and then sticks to a solid to begin its growth into an adult sponge. Sponges are also able to reproduce asexually through budding.

What is Rhagon type of canal system?

How do sponges reproduce?

Sponges may reproduce sexually and asexually. After fertilization in the sponge, a larva is released into the water. It floats around for a few days and then sticks to a solid to begin its growth into an adult sponge. Sponges are also able to reproduce asexually through budding.

What are the classification of porifera?

The phylum Porifera has four classes, namely the Calcarea, Demospongiae, Hexactinellida and Homoscleromorpha. Exclusively marine, calcareous sponges predominantly inhabit shallow tropical waters.

What is the function of Choanocytes?

The function of a choanocyte is to create water flow through the body of a sponge. This allows nutrients to filter through and feed the sponge. Choanocytes are cells located on the whip-like appendages, called flagella, located in the sponge.

What is the function of the Spongocoel in a sponge?

Amoebocytes–These are motile cells that perform various digestive functions within the sponge by transporting/storing food and excreting waste.

What sponge body type is most efficient?

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.

Why are spicules important for sponges?

Spicules are structural elements found in most sponges. They provide structural support and deter predators. Large spiculesthat are visible to the naked eye are referred to as megascleres, while smaller, microscopic ones are termed microscleres.

What is the function of the Spongocoel in a sponge?

Standard locks

For reasons of economy and the constraints of 18th-century engineering technology, the early canals were built to a narrow width. The standard for the dimensions of narrow canal locks was set by Brindley with his first canal locks, those on the Trent and Mersey Canal in 1776.

What is the function of the Spongocoel in a sponge?

The radial canal is lined by choanocytes and opens by a wide aperture, called apopyle, into a short wide ex-current or exhalent canal lined by flat epidermal cells which communicates with the spongocoel by an internal ostium. Finally, the spongocoel opens to the exterior by osculum (Fig. 11.12).

How do porifera reproduce?

Sponges reproduce by both asexual and sexual means. Most poriferans that reproduce by sexual means are hermaphroditic and produce eggs and sperm at different times. Sperm are frequently “broadcast” into the water column. Some sponges release their larvae, where others retain them for some time.

What is sycon canal system?

Sycon is a sedentary sponge. It leads an aquatic life The body of sycon shows pores and canals which form a complex canal system. It is called sycon type of canal system. This will show one or two ostia, through which water enters into the incurrent canals. The ostium is surrounded by myocytes.

What is ascon type of canal system?

Ascon type of canal system is the one with the flagellated spongocoel. It is the simplest type of canal system. In this type of canal system, water enters through ostia into spongocoel and excrete through osculum. Sponge with ascon type of canal system is called as asconoid sponge e.g., Leucosolenia.

How many types of canal systems are there in porifera?

The canal system in sponges is of three types ascon, sycon and leucon type and depending on the complexity of canal system, these canal systems are present in different types of sponges but all poriferans have a paragastric cavity or spongocoel.

Why canal system is called Aquiferous system?

Spicules are structural elements found in most sponges. They provide structural support and deter predators. Large spicules that are visible to the naked eye are referred to as megascleres, while smaller, microscopic ones are termed microscleres.

What are the classification of porifera?

The phylum Porifera has four classes, namely the Calcarea, Demospongiae, Hexactinellida and Homoscleromorpha. Exclusively marine, calcareous sponges predominantly inhabit shallow tropical waters. They are often small and delicate, with thin coalescent tubes or a vase-like form.

What is water canal system in porifera?

Canal System:

Sponges have a water transport or canal system. Water enters through minute pores (ostia) in the body wall into a central cavity, spongocoel, from where it goes out through the osculum. This pathway of water transport is helpful in food gathering, respiratory exchange and removal of waste.

What is water canal system in porifera?

Amoebocytes–These are motile cells that perform various digestive functions within the sponge by transporting/storing food and excreting waste.

What is canal irrigation?

Irrigation canals are the main waterways that bring irrigation water from a water source to the areas to be irrigated. An open canal, channel, or ditch, is an open waterway whose purpose is to carry water from one place to another. Channels and canals refer to main waterways supplying water to one or more farms.

What are the 3 main types of canals in sponges?

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.

How do porifera reproduce?

Sponges reproduce by both asexual and sexual means. Most poriferans that reproduce by sexual means are hermaphroditic and produce eggs and sperm at different times. Sperm are frequently “broadcast” into the water column. Some sponges release their larvae, where others retain them for some time.

What is Apopyle?

apopyle (plural apopyles) A pore through which water passes out of a radial canal or flagellated chamber of a sponge.

What are the two functions of spicules?

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 a Syconoid sponge?

Syconoid Sponges. Syconoid sponges have pleated body walls. The pleats form radial canals that transport water into the sponge. Because the insides of the radial canals are lined by choanocytes, a syconoid sponge has many more choanocytes than does an asconoid sponge of the same size.

What is Rhagon type of canal system?

Spicules are structural elements found in most sponges. They provide structural support and deter predators. Large spicules that are visible to the naked eye are referred to as megascleres, while smaller, microscopic ones are termed microscleres.