Unique animals: Porifera Phylum

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As time progresses, animals have become bigger and display more of a complex body. In some cases, this is not always true. The Poriferas and Cnidarians do not have a difficult structure like the Platyhelminthes. The body structures can determine a lot about how these animals survive in their environment, and it is important that their structure can manage their distribution of gases, and obtain food and waste. These facts and information will show proof of the many characteristics and bodily functions that these three animals display.

I found it interesting that the most recognized organisms in the Porifera Phylum are called sponges. In fact, Porifera is the oldest phylum in the kingdom of Animalia, and have been around for the last six hundred million years. Some important characteristics that can be identified with Porifera are: they have no definite symmetry, no organs, no nervous system, mostly have a skeleton of spicules, all filter feeders, multicellular organisms, and they live in aquatic environments. Sponges are a unique and simplistic animal, and have been around for a long time. These sponges can be found in rivers and streams or in the depths of the ocean. Sponges can show a great variety of forms, but their basic organization is quite simple. Sponges are a water filtering system. They have a convenient canal system that helps them receive food and pump water through a canal, which water comes in through pores called ostia. After, it flows through a chamber called spongocoel. It exits through the oscula, which are large openings. Sponges consist of three layers: an outer layer of pinacocytes, an inner and non-living layer with amoebocytes that assist reproduction and bring food particles from the choanocytes to other ...

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...er. These Platyhelminthes get rid of their waste by diffusion, once the molecules are disclosed, nitrogen is freed, and it is turned into ammonia. The excretory system that they have consists of: flame cells, excretory tubles and excretory poles. Finally, this is more of a complex animal, the development of an excretory is vital because of the greater number of cells and the density of tissue is possesses.

As each animal gets bigger, it is noticeable that there needs to be more to help out its complex body structure. This is a means for survival. More organs, more nervous systems, and more body structures are what are required for a larger animal to achieve its goals and make them stronger animals. It was intriguing to find out these facts about animals that I did now know acquired so much attention. They are unique animals, and they must be acknowledged.

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