Humans, cats, frogs, birds and fish are all members of the Phylum Chordata. The Phylum Chordata is a classification of living creatures characterized by the presence of a notochord, a section of nerves running down the back of the organism.Know More
Phylum Chordata encompasses a large group of various species that are broken down into subphylum. Though each subphylum differs significantly, they all share the similarity of having a spinal cord and accompanying evolutionary features that allow for a higher brain function. The name Chordata is derived specifically from the notochord, which houses all of the important nerves that connect the brain to the rest of the body. Mammals, such as humans and cats, have a skeletal structure that hinges around the presence of the notochord. Fish and birds have a similar skeletal structure with the backbone playing a major role in the development and abilities of the organism.
Other distinguishing characteristics of the Phylum Chordata are the pharangeal slits, which are openings near the head of the organism. In the earliest forms of chordates, these were used for feeding or filtering water. They can be seen in fish in the form of gills and in humans and birds in the form of ears.Learn more about Worms
The three subphylums in Chordata are Vertebrata, Urochordata and Cephalochordata. Vertebrata is the largest group, including such familiar animals as fish, birds, reptiles, amphibians and mammals. Urochordata contains about 4,600 to 5,100 species total, and Cephalochordata contains only 28.Full Answer >
Members of Chordata may live in aquatic environments if they are invertebrate fish or in land environments if they are vertebrates. They include marine animals, amphibians, birds, reptiles and mammals. There are several classes of Chordata that include Mammalia, Aves and Agnatha.Full Answer >
One common characteristic of members of the phylum chordata is the notochord. The notochord is a rod made of cartilage that supports the nerve chord and runs beneath it.Full Answer >
Humans and other vertebrate animals are some examples of coelomate animals. Coelomate animals are those whose body structure is based on a body cavity lined on the inside and around the gut by mesoderm.Full Answer >