The sponges are multi-cellular organisms that have pored or channeled bodies. This allows water to circulate through the cells of an animal. The organisms also consists sandwiched and jelly like mesohyl in between the two layers…
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The sponges were considered to be plant-animal classification until 19th Century because they were not able to move, especially during their adult life where they attach themselves to a rock.
However, this paper aims to evaluate in a critical aspect about the notions that Phylum Porifera is paraphyletic rather than monophyletic. The essay achieves its purpose 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 bilaterian’s ancestors.
The sponges are among the simplest animals in the Kingdom Animalia. Their feeding system is unique among other 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 branching event, which resulted to their separation from other metazoans. The sponges differentiate themselves from other animals in different nature such as lacking digestive, nervous, and circulatory systems. On their side, they adapt themselves by maintaining the constant flow of water through their pored bodies in order to get oxygen and food, as well as removing waste from the body.
In addition, their shape of the body is adaptive to maximal reliability of water flow though their central cavity, where it uses a hole called osculum to deposit the nutrients. Most of the sponge species feed on the food particles or bacteria in the water, where some of them host micro 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 have become carnivores since they mainly prey on
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(Phylum Porifera Essay Example | Topics and Well Written Essays - 1250 Words)
“Phylum Porifera Essay Example | Topics and Well Written Essays - 1250 Words”, n.d. https://studentshare.org/biology/1629376-phylum-porifera.
All known vertebrates are broadly grouped in the phylum Chordata. This grouping takes into consideration a number of factors known as diagnostic factors. Therefore for an animal to be considered a chordate it must have or it had the following diagnostic features: Notochord: a long flexible rod of cartilage that runs along the body Pharyngeal gill slits: Are the holes or perforations along the neck or throat.
In this way, they are the most widely distributed amphibian in North America; even reaching beyond the Arctic Circle ("Wood Frogs (Lithobates Sylvaticus) in Manitoba") its scientific name is Rana Sylvatica. Furthermore, it has very attractive characteristics that are usually coupled and are similar to other Chordates, Amphibians and Anurans etc.
Its common names are Rusty gilled polypore Yellow-red gill polypore Conifer and mazegill.
As with all fungi G. sepiarium is heterotrophic, it is an organism that is part of a food chain. Fungi decompose dead organic matter, attack living plants and produce as with G.
For instance, humans are classified as follows in the taxonomic categories. (Bernard, & Mark, 1999).
In this assignment the nine images in the document table represents the nine animals Phylum. These phylum
As an animal increases in size, the less the area it has in relation to its volume. As a result, it helps in expressing the relationship between surface area and volume as an organism size changes. Consequently, surface area to volume ratio has serious implications for limits or challenges on organism size.
In relation to human beings, they belong in same kingdom, phylum, class, order, and family. Chimpanzees share somethings closely with human beings. The DNA structures are almost similar. Chimpanzees’ ancestors are the Australopithecus and
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