StudentShare
Contact Us
Sign In / Sign Up for FREE
Search
Go to advanced search...
Free

Nine Phyla of the Animal Kingdom - Assignment Example

Cite this document
Summary
The paper "Nine Phyla of the Animal Kingdom" states that among the nine phyla of the animal kingdom, Phylum Porifera and Phylum Cnidaria lack organ systems. Moreover, they lack cephalization, as only six phyla show it – Mollusca, Arthropoda, Chordata, and the three worm phyla…
Download full paper File format: .doc, available for editing
GRAB THE BEST PAPER91% of users find it useful
Nine Phyla of the Animal Kingdom
Read Text Preview

Extract of sample "Nine Phyla of the Animal Kingdom"

When it comes to the development of their young, mammals can be monotremes, marsupials, or placentals.

The Phyla that Lack Organs and the Type of Symmetry They Have
Among the nine phyla, those that lack organs include Phylum Porifera and Phylum Cnidaria. Phylum Porifera, to which the spongers belong, only has a cellular level of organization. Moreover, Phylum Cnidaria, to which the jellyfish and anemones belong, only have tissues and no organ systems. It is also interesting to note that members of the Phylum Porifera have no symmetry but Phylum Cnidaria has radial symmetry. (Audesirk & Audesirk, 2008)

The Phyla that Show Cephalization

Among the nine phyla, only six show cephalization. These are the Phylum Mollusca, Phylum, Arthropoda, Phylum Chordata, and the worms – Phylum Platyhelminthes, Phylum Nematoda, and Phylum Annelida. The members of these phyla have a distinct head. (Audesirk & Audesirk, 2008)
The Phyla that Have Fewer than Three Germ Layers
Not all organisms have the three germ layers. While all other phyla have the ectoderm, mesoderm, and endoderm, it is Phylum Cnidaria that does not possess the mesoderm, thus it is called diploblastic. All the other phyla are called triploblastic by their having all three germ layers. (Pomarico, 2006)
The Phylum that Has More Species than Others

Phylum Arthropoda is the phylum with the most number of species compared to all the other phyla. A subphylum of arthropods, the arachnids, includes scorpions, mites, spiders, daddy-long-legs, and ticks. The crustaceans include crayfish, lobsters, and crabs. The chilopods and diplopods include all centipedes and millipedes respectively. The insects include dragonflies, butterflies, grasshoppers, crickets, cockroaches, termites, leafhoppers, beetles, bees, mosquitoes, fleas, ants, and wasps. (Carter, 1997)
The Differences among Fish from the Most Primitive to the Most Advanced

The most primitive of fishes – the ostracoderms and placoderms – appeared from the Ordovician and Devonian periods. The ostracoderms were shell-skinned and had a bony plate external to their cartilaginous bodies. The head and upper torsos were covered with a bony armor plate and the back and lower half were cartilage. They also had spikes and a toothless jawless structure. On the other hand, the placoderms, which eventually replaced the ostracoderms, had armor that covered the entirety of the head and a portion of the body as well. The only difference was that the placoderms had functional jaws, unlike the ostracoderms. (Arreola, 2005)

The placoderms were eventually replaced by Class Agnatha, or the jawless fishes, such as lampreys and hagfish, which exist today. They have neither jaws nor a bony skeleton. The Class Chondrichthyes developed next. They have jaws but lack a bony skeleton. Members of this class include sharks and skates, all of which have cartilaginous skeletons and skin with teeth-like denticles. Finally, the Class Osteichthyes, or the jawed bony fishes, developed last. These fish, with over 20,000 species all over the world, have protrusible jaws and calcified skeletons. (Buchheim, 2011)

The Three Types of Mammals Based on How Their Young Develop
The three types of mammals based on how their young develop include the monotremes, the marsupials, and the placental mammals. The monotremes, which include the duck-billed platypus, are those that lay eggs through their cloaca, a single posterior opening in their bodies. As the eggs hatch, the young are fed with milk from the mammary glands and nurtured for as long as one year. (Baines, 2001; Thompson, 2011)

On the other hand, the marsupials, like the opossums, produce very immature young which develop while attached to the nipples in a marsupium or abdominal pouch for one week to one year. The young do not have completely developed hearts, lungs, and eyes. (Baines, 2001; Thompson, 2011)
The placental mammals, to which around 3800 species worldwide would belong, differ from the monotremes and the marsupials because the former would normally give birth to more mature young, which were nurtured for a considerable time before birth. The young are given birth through the urogenital tract and are fed with milk from the mammary glands. (Baines, 2001; Thompson, 2011) Read More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Taxonomy Assignment Example | Topics and Well Written Essays - 1000 words”, n.d.)
Retrieved from https://studentshare.org/biology/1430805-taxonomy
(Taxonomy Assignment Example | Topics and Well Written Essays - 1000 Words)
https://studentshare.org/biology/1430805-taxonomy.
“Taxonomy Assignment Example | Topics and Well Written Essays - 1000 Words”, n.d. https://studentshare.org/biology/1430805-taxonomy.
  • Cited: 0 times

CHECK THESE SAMPLES OF Nine Phyla of the Animal Kingdom

Choosing a Composition by Emily Dickinson

In creating an animal orthography, Dickinson then strains beyond metaphor.... This research paper "Choosing a Composition by Emily Dickinson" is about some of the vital unanswered questions.... The subject in itself is curious on one hand and vague on the other.... Death is a process of transition to a brighter happier life from a common man's point of view....
11 Pages (2750 words) Research Paper

The Suffering of Prometheus and Encounters with Zeus

The goal of this essay is to summarize the stories of Prometheus in Ancient Greek mythology.... From the discussion, it can be affirmed that the punishment inflicted upon the former is driven by animosity, based on account of all the encounters between Prometheus and Zeus.... ... ... ... Prometheus, the son of Themis or Gaia (Earth) as she is called by many names, is an immortal god....
3 Pages (750 words) Essay

Characteristics of the Kingdom Animalia

Most of the animals on the earth live in the sea, some live in fresh water, and the smallest percentage of the animal kingdom live on land.... Members of the animal kingdom have specialized tissues and organ systems.... Members of the group Chordata are indeed special within the animal kingdom though.... Members of the group Chordata are indeed special within the animal kingdom though.... the animal kingdom contains more members than any other kingdom with likely over a million different species on the planet....
2 Pages (500 words) Essay

Unit 5 Individual Project Biology

The key is made up of a series of numbered couplets, and within each couplet are two opposing statements which you read, choosing the one that best fits the animal picture.... If the critical traits looked for are known, it is possible to easily separate any animal into a specific taxonomic category.... These phylum The Dichotomous Key (Appendix B) was used to determine the taxonomic category (phylum or class) for each animal picture, and these categories written on Classification Column on the table....
5 Pages (1250 words) Essay

Kingdoms of Life

In the research paper 'Kingdoms of Life' the author analyzes overviews of Characteristics of each kingdom.... The kingdom includes all types of photosynthetic, multicellular, eukaryotic plants in the biosphere.... According to the author, organisms classified under Metazoans or the kingdom Animalia have several characteristics: autotrophs; eukaryotic and multicellular; possess some form of skeletal support; reproduce sexually; specialized cells for specific purposes; and indicate degrees of organization including cell, system, tissue, and organ....
5 Pages (1250 words) Assignment

The Board Gender Diversity and Cost of Capital in Hong Kong

In several countries, specifically, Singapore, the United kingdom, Switzerland, and the United States, gender diversity in a company's board is being given a lot of importance due to its positive impact on the company's performance (Terjesen and Singh 55-63).... The aim of the research proposal titled "The Board Gender Diversity and Cost of Capital in Hong Kong" paper is to evaluate the degree of gender diversity on the boards of Hong Kong's listed companies and their impact on a firm's financial performance....
15 Pages (3750 words) Research Proposal

Threats to the Long-Term Sustainability and Provision of Ecosystem Services

This essay "Threats to the Long-Term Sustainability and Provision of Ecosystem Services" is about the depletion of natural forests which is a major challenge and a threat to environmental stability.... Sustainable management of tropical forests calls for urgent conventional principles.... ... ... ...
13 Pages (3250 words) Essay

Agricultural Practices in the United Kingdom

The paper "Agricultural Practices in the United kingdom" tells that agriculture is the cultivation of plants, fungi, animals, and various forms of food used in human life.... animal husbandry is practiced under strict laws that stipulate the prevention and control procedures across the entire country.... Genetic modification involves the incorporation of modern biotechnology techniques to change an organism's genes, like a plant or an animal....
9 Pages (2250 words) Essay
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Contact Us