The most basic body plan is called asconoid. In asconoid sponges, two major cell layers surround a liquid-filled cavity called the sponge coil, which is the large central cavity of the sponge. Water is pumped directly into the sponge coil through pores called the mouth and then drained from the sponge through openings called oscrams (multiple oscuras). All canals are collectively referred to as the canal system. The Scypjia (Sycon) canal system is known as the syconoid type. Establish a continuous passage for water inflows and outflows within the sponge body (Figure 19.2). The following structures are found in relation to Scypha's canal system. Sponge can reproduce both asexually and sexually. In asexual reproduction, it reproduces by forming buds, precursor cells, reductants, regenerating itself, and dividing. In sexual reproduction, it propagates by mutual fertilization of male sperm and female eggs.
What is the structure of the asconoid sponge?
The asconoid sponge is shaped like a simple tube with perforated pores. The open inner part of the tube is called the sponge coil. Contains choanocytes. There is a single opening to the outside, osculum.
What is the Sponge Siconoid Canal System?
Siconoid Canal System This type of canal system is a bit more complex and sophisticated than the Asconoid system and has the following important features: The sponge's body wall is thick and folded with well-developed mesenchymes. The radial canal formed by pushing out the body wall is called the flagellate canal because it is lined by choanocytes.
What is the difference between sponge body plans?
The main difference between each body plan is the complexity of the canal system that pumps water to the animals. These drawings show cross sections of the body walls of asconoids, synconoids, and leuconoid sponges. Water flows into the sponge koel through the small holes / small holes.
How do sponges reproduce sexually and asexually?
Water enters the body through Ostia and reaches the radial canal by Prosopil. These species undergo both sexual and asexual modes. These are also known as glass rope sponges contained in seawater. The body is round or oval, with twisted root tufts.
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