Phylum Porifera Essay Example | Topics and Well Written Essays - 1250 words

Phylum Porifera - Essay ExampleThe sponges were considered to be plant-animal potpourri until 19th Century because they were not able to move, especially during their adult life where they attach themselves to a rock.However, this newspaper publisher aims to evaluate in a critical aspect about the images that Phylum Porifera is paraphyletic rather than monophyletic. The essay achieves its point by providing credible sources to demonstrate the comparative knowledge of morphology and embryologoy in an effort of evaluating the suggested hypothesis. The paper demonstrates the suggestions of the notion in respect to bilaterians ancestors.The sponges are among the simplest animals in the Kingdom Animalia. Their feeding system is unique among other(a) types of animals. However, the evolution of animals is believed to transform the sponges from their earlier form of multi-cellular organisms to the present day animals. As earlier mentioned, it is learnt that Poliferans had an early fork ed event, which resulted to their separation from other metazoans. The sponges differentiate themselves from other animals in different nature such as wanting digestive, nervous, and circulatory systems. On their side, they adapt themselves by maintaining the constant flow of water through their pored bodies in drift to get oxygen and food, as well as removing waste from the body.In addition, their shape of the body is adaptational to maximal reliability of water flow though their central cavity, where it uses a hole called osculum to deposit the nutrients. about of the sponge species feed on the food particles or bacteria in the water, where some of them host small organisms for photosynthesizing processes to act as endosymbionts. Such associations ensure there is maximum production of oxygen and food in the water, as compared to what they consume. However, some sponges that live in environment with small or no food commit become carnivores since they mainly prey on