Chordate Essays

1. The Phylum Chordata consists of chordates that are defined by the four fundamental characteristics that they possess such as the pharyngeal gill slits, muscular post-anal tail, dorsal, hollow nerve tube and the notochord (Department of Biology 2008). However, the adult humans lack two of these significant characteristics, which are the post-anal tail and the notochord. Furthermore, humans are classified as chordates due to the similarities within characteristics. For example, humans posses the

In the story “The Earth on Turtles Back” it explores a very nurturing and unique way that the earth was created. The original idea was brought on by the Native Americans but is retold by the authors. It explores the idea that animals and dreams helped start the building of earth. Within the story you find some very shaping and well-fitting themes. The themes with in “The Earth on Turtles Back” are one thing must end for another to begin, importance of animals, and belief in dreams. To begin,

The five kingdoms of life are monea, protista, fungi, plantae , and animalia, which include animas like clams. Within the Animalia kingdom that are different groups, each which are called phylums, and clams are considered in the phylum group known as mollusks. Mollusks which derive from the latin word mollis, means "soft". In the world ther are 1500 different kinds of mollusks whome are grouped into six different classes. One of these classes are called bivalves, which are aquatic mollusks

The Asteroidea class, also known as the sea stars, has many common characteristics. Firstly, all sea stars have flat, star-shaped bodies as well as a central disc with radiating arms/rays protruding out. Typically, seastars has five arms but certain species can have up to fifty arms! The size of the sea stars is not consistent through the different species therefore varies from one centimeter to three feet. The skeletal system is a key aspect for the survival of a sea stars. Sea stars have bilateral

Crayfishes are part of the subphylum Crustacea, and are part of the Phylum Arthropoda. Phylum Arthropoda have a bilateral body symmetry which means the body is divided into similar external right and left halves. The tissue organization of Phylum Arthropoda have three tissue layers, ectoderm, endoderm, and mesoderm; thus it is triploblastic. The body cavity of the phylum is coelomate meaning its organs are lined with mesoderm. Phylum Arthropoda embryonic development is protostome which means that

As a human it is easy to take our ability to walk upright for granted. After a few shaky toddler years, we learn, and the ability to sit upright and be bipedal simply comes naturally to us. However, on closer inspection we can see that bipedalism is no ordinary trait or random coincidence – bipedalism is one of most discerning human characteristics and is the result of millions of years of adaption in our ancestors that has led to modern human bipedalism. In this essay I am going to explore the

Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Rodentia Family: Bathyergidae Genus: Heterocephalus The Heterocephalus glaber, more commonly known as the Naked Mole-rat, is a burrowing mammal with unique features suited to an underground environment. Naked Mole-rats are the only mammalian thermoconformer, which means they don’t have the ability to thermally regulate their own body temperature. The naked-mole rat is neither a mole, nor a rat, but is a rodent closely related to Guinea

incredible evolutionary burst that occurred during its time. This is known as the Cambrian Explosion (3). This is when many major groups of animals first appear in fossil record (5). One type of animal that evolved during this time period is the chordates (1). These include vertebrates, which humans belong to. The earliest known

Heredity & Evolution, Summer ‘15 Exam 4: Final Exam 1. What is a GMO (Genetically Modified Organism) and how is it different from a GEO (Genetically Engineered Organism). How is a Genetically Engineered Organism created? A Genetically Modified Organism is an organism that is altered to produce new traits in an organism. Say you want all of the peaches you grow; you want them to look bright red similar to a Red Delicious apple. You take the DNA from the apple and when you grow the peaches, you

Frog. Both of these frog species are part of the Animalia Kingdom. They are heterotrophs, they depend on other organisms directly or indirectly for food. Phylum - Chordata. The Yellow Tongued Duckweed Frog belongs to the Phylum Chordata. All chordates have something in common, which is their main feature, the notochord. The notochord is a rod that supports the nerve cord. This is a bundle of nerve fibers which connect the brain with the muscles and organs, and is through which messages from

As the fossil chordates, horses evolved the spine evolved from an arc to a straight spine, the neck became more upright like a modern horse, and the structure of the front legs became more straight rather than curved which makes the horse have a better posture and stand

Back to the Cambrian If I were to time travel, I would travel back to the Cambrian Period. An underwater adventure would be extremely ideal since no life exists on land during this period (Bagley). Shelled animals and other marine creatures evolved as well as other animals with endoskeletons and exoskeletons. The major event that happened was the Cambrian Explosion, caused by glaciations, changes in ocean chemistry, and evolution of predators (Monroe and Wicander, p. 240). The atmosphere had

The big difference between is that Frill-neck lizard has a large frill around its neck which is usually folded around their body to protect themselves. They are able to run on its hind legs. Scientific classification Kingdom Animalia Phylum Chordate Class Sauropsida Order Squamata Suborder Lacertilia Family Agamidae Subfamily Agaminae Genus Chlamydosaurus Species Chlamydosaurus kingii Habitat of Frilled-neck lizard They are mainly found in northern part of Australia and southern New Guinea

Pre-Cambrian organisms consisted of prokaryotes, eukaryotes, bacteria and ediacaran life forms. In less than 5 million years, most of the basic body plans that we observe in modern groups appeared; cnidarians, molluscs, arthropods, echinoderms and the chordates all came on to the scene. This explosion directly conflicts Darwin’s theory of natural selection acting on random variation, the Cambrian fossil record contradicts the empirical expectations of

Channa Argus, commonly known as the northern snakehead, is one of the many invasive species around the world. This species is a top level predator and was introduced to several American states in 2002, but its natural habitat is based in southern and eastern Asia. Northern snakeheads were transported to the waters of America by being sold from pet stores and live food fish markets, followed by being released into the wild. The northern snakehead fish threatens and competes for the native species’

Earthworm and Bullfrog comparison 1/14/2018 Dissecting the Animal Kingdom pd 7 pg1 The organisms i will be comparing are the Earthworm and the Bullfrog, the Earthworm is part of the phylum Annelid and the Bullfrog is part of the Phylum Chordate. The earthworm is a invertebrate and the Bullfrog is a vertebrate. This means that the Earthworm does not have a skeletal structure in its body but a bullfrog does. A key characteristic of both the animals is that they have bilateral symmetry. This

"High White", "Ruby Red-eyed" and anomaly. They’re unbroken in glass, plastic or wood enclosures with correct instrumentation to provide the right temperature and wetness. still the kind of cage, its security is of utmost importance to prevent the chordate from escaping. tykes do best with smaller cages roughly the length of their body, and will be adapt to larger environments as they age, as enclosures that unit of measurement over giant can cause superfluous stress. Common substrates acceptable to

The Neovison vison dissection lab was intended so students could study the external and internal anatomy and physiology of the Neovison vison. Once the Neovison vison was dissected, students could see the similar and different characteristics of the Neovison vison that are present within the human body. Students were able to identify muscles, bones, organs, tissues, insertion points, and origin points within the body of the animal. Reflection on skeletal and muscular structure was also studied throughout

Sharks have been swimming the world’s oceans for more than 400 million years - 100 years before the first dinosaurs appeared (Griffin et al., 2008). Sharks fall under the kingdom Animalia, the phylum Chordate and the class chondrichthyes. There are more than 400 known shark species found in the ocean (Musick and Musick, 2011). In the ocean, sharks help maintain the health of ocean ecosystems and help regulate and maintain the balance of the marine environment (Griffin et al., 2008). These sharks

"One way to understand OCD is that the normal cortical inhibition of the amygdala is malfunctioning and that the anxiety responses induced by the amygdala therefore become more intrusive and chronic in patients with OCD. ?," write Denys, Zohar, and Westenberg in?"The Role of Dopamine in Obsessive-Compulsive Disorder: Preclinical and Clinical Evidence." Dopamine comes into play in response to amygdalae-generated anxiety in that dopamine drives seeking activity. Seeking activity includes not only the