What do sponges and jellyfish have in common?
Sponges have specialized cells and an endoskeleton, but they lack tissues and body symmetry. Many live on coral reefs and have symbiotic relationships with other reef species. They include jellyfish and corals, both of which have radial symmetry. All cnidarians have nematocysts, and many are bioluminescent.
What does respiration occur in sponges?
Sponges Respire Through Diffusion When sponges pump water into their body, nutrient and oxygen-rich water passes over the cells. Oxygen diffuses into the cells while waste products such as carbon dioxide leave the cells.
Do sponges perform respiration?
Sponges do not have distinct circulatory, respiratory, digestive, and excretory systems – instead the water flow system supports all these functions. They filter food particles out of the water flowing through them.
How do sponges and cnidarians do respiration?
The gastrovascular cavity has only one opening that serves as both a mouth and an anus (an incomplete digestive system). Like the sponges, Cnidarian cells exchange oxygen, carbon dioxide, and nitrogenous wastes by diffusion between cells in the epidermis and gastrodermis with water.
Do Cnidaria have a respiratory system?
There are no respiratory organs, and both cell layers absorb oxygen from and expel carbon dioxide into the surrounding water. When the water in the digestive cavity becomes stale it must be replaced, and nutrients that have not been absorbed will be expelled with it.
What function do porifera serve in the ocean?
Sponges can remove up to 95% of bacteria and particles from the water (POM) and 90% of dissolved organic carbon (DOC), thereby converting suspended particles and dissolved matter into food for other animals.
Does a jellyfish need oxygen?
Jellyfish, or Scyphozoans, have no structures dedicated for respiration or circulation. However, they still need oxygen, just like every other animal. They do have several physiological adaptions that allow them to take up oxygen, and even store it, allowing jellyfish to survive in low-oxygen conditions.
Do sea sponges respire?
rikkileetamayo rikkileetamayo Sponges are a type of aquatic animal whose body is covered in tiny pores called ostia. Water flows through the sponge in one direction. They don’t nessessarily breath, yet they do respire.
How do sponges use diffusion?
A sponge gets its oxygen from water too. The water contains oxygen, which moves from the water into the sponge’s cells in a process known as diffusion. So the oxygen moves from the water into the sponge. Diffusion also carries waste products from the sponge’s cells into the water.
How do jellyfish breathe?
Jellyfish aren’t fish at all. Despite their name, jellyfish aren’t really a type of fish. Fish are vertebrates that live in water and breathe through their gills. Jellyfish, on the other hand, are invertebrates, meaning they have no backbone and they absorb oxygen from water through membranes.
How do jellyfish exchange gases?
All: Simple multicellular organisms, such as jellyfish, don’t have respiratory structures. They exchange gases by direct diffusion between their cells and the surrounding water.
What do cnidarians use for respiration?
While cnidarians do not have lungs or other respiratory organs, they do use body cells to take in oxygen and expel waste gases. This can be a problem in areas with stagnant water, as the lack of circulation decreases the available oxygen.