Sponges continually pump water through the ostea into an internal system of canals and expel it from the osculum, trapping food and removing oxygen from the water. They use collar cells in these canals to flip flagella, creating the pumping action that forces the water through their structure and trapping tiny bits of food.Know More
The Ocean Research Group says sponges are filter feeders that can consume particles as small as bacteria as well as much larger ones. They consist of an outer layer of flat epithelial cells, a middle gelatinous layer with cells that are able to migrate throughout the layer, and an inner layer containing the flagellated and collar cells.
Sponges, once thought to be plants, are animals and require oxygen to live. They transfer waste, including carbon dioxide, to the water as it passes through the canals as a part of their respiration process.
Reference.com reports there are more than 4,500 known species of sponges, all marine, with the exception of one family of freshwater sponges. They prefer shallow, temperate water, where most sponges attach themselves to rocks and live the remainder of their lives. Freestanding sponges, such as the barrel sponge, grow large enough to fit a human inside.Learn more about Biology
Remove the smell of burned food from a microwave oven by wiping the oven with a vinegar solution, heating the solution, allowing the steam to loosen any smoky residue, and using a sponge to remove the smoky coating. Vinegar helps to eliminate the smell at its source.Full Answer >
Phylum Porifera, or the sponge, is entirely aquatic, with over 98 percent living in the ocean, and the rest living in freshwater lakes and streams, according to BioMedia Associates. The sponge serves an important purpose in filtering bacteria and other contaminants from water, and it forms a significant portion of coral reefs. Many sponges are brightly colored and come in a diverse array of shapes.Full Answer >
Unicellular organisms do not breathe in the typical sense, but they respirate by allowing oxygen to enter the cell membrane through the process of diffusion. Because they are so small, they do not have the organs, pores and entryways to breathe like multicellular organisms.Full Answer >
Human beings require air because, like all other animals, they are aerobic organisms who require oxygen, which is a component of air. While oxygen is found in water, humans evolved to extract the oxygen from air, as birds, mammals and reptiles do, instead of from the water, as fish and some amphibians do. Additionally, air is necessary to keep the planet warm as it insulates the planet like a blanket.Full Answer >