Scientists analyze how fast sponges breathe and the amount of nitrogen they release while doing so. Hexactinellid sponges are sponges with a skeleton made of four- and/or six-pointed siliceous spicules, often referred to as glass sponges. In terms of oxygen, 75% of oxygen is maintained from the water that passes through them. The flow of water out of the osculum creates a vacuum that sucks water in through the pores of the sponge. If the collar cells do not digest the food, they pass it on to the amebocytes. Sponges are sessile organisms, meaning they stay in one place, attached to the sea floor. Where do sponges live? Hexactinellid is a type of porifera that uses respiration everyday. Sponges do need oxygen to survive, as it is a vital component of aerobic cellular respiration. The sponges do not possess an anterior end or head like those of Metazoa. 5. Sponges generate currents with the flagella on their cells and direct water through their walls and into their central cavities, filtering the water for bacteria, algae, and protozoa as they do so. Describe how sponges feed, respire, and excrete. Sponges collect bacteria when they filter the water around them. Chapter: Problem: FS show all show all steps. The flagella are used to create a flow of water within the interior of the sponge and that flows out large holes known as the ‘osculum’. they breathe the same way as all under water sponges do. Step-by-step solution: 100 %(5 ratings) for this solution. Adult sponges live on substrates or solid surfaces in aquatic environments. Most latch onto rocks, reefs, or other solid and stable surfaces. They do have moving parts though: special cells called choanocytes have flagella that whip around and create a water current. These bacteria are believed to be able to do many things. Sponges have no distinct respiratory system because they are so primitive, but they do require oxygen to survive like any other organism. The small pores (also known as ostia) in the sponge allow the sponge to absorb oxygenated water to receive the oxygen it needs. Specific cells within the sponge have what are known as ‘flagella’. Feeding: As Sponges are filter- or suspension-feeders, they feed by collecting particles which are suspended in the water. They reproduce by broadcast-spawning: sending out huge numbers of sperm … When the amebocytes are finished digesting the food particles, they wander around, delivering digested food to other parts of the sponge. The osculum acts only as exhalent aperture. 6. Step 1 of 5. Sponges do not breathe as lungs are required to do so. Sponges live underwater and they all breathe the same way. What does a sponge do? Asexually, reproduction is achieved by way of budding, which is a process in which new sponges grow out of adult sponges. The body of sponges is perforated by numerous minute pores and they possess a unique system of canals in their body; all these are never found in Metazoa. Sponges are basically capable of digesting any biological waste that is small enough to be absorbed by their filtration mechanisms, so sponges rarely have trouble harvesting food. 5. How do sponges feed? The respiration process detailed above also captures microorganisms and detritus in the water, to be digested by the sponge. Some sponges can root themselves in loose material, like sand, while others latch onto living organisms like turtles, crustaceans, or shellfish. It may also be achieved asexually by fragmentation, in which a detached piece of an adult sponge … Essentially, sponges breathe in a number of steps: Water comes into contacts with the sponge. Respiration is by diffusion . Sponges, or poriferans, reproduce both sexually and asexually. 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