Chordate

Chordate Dissection and Anatomy In this lab, a dissection was performed on a mouse, a frog, and a dogfish shark, and the anatomy was observed and noted. The three animals have some similarities and differences. The mouse, frog, and dogfish shark are all similar in that they all have closed circulatory systems. But the three animals have different types of hearts. The mouse has a four chambered heart, the frog has a three chambered heart, and the dogfish shark has a two chambered heart. The…

All animals belong to the supergroup Unikonta. Since these animals are found in almost every environment on earth, it has become possible to study their characteristics and construct evolutionary relationships, noting morphological and molecular similarities and differences. The relationships between the most primitive of animals were determined by the morphological traits of symmetry, tissues, body cavity, embryological development, and molecular evidence. [1] Symmetry and tissues are major…

impossible to have such a big and extensive process that evolution is as purely nature dependent. Consequently, it would be impossible to have a fully developed aerobic respiration, autotrophic nutrition, etc., and on the top of that fully developed chordates in that amount of…

CLASSIFICATION AND FUN FACTS ABOUT DOLPHIN 10-B SOPHIA LEE REBECCA CZEKALSKI/ VICTORIA MORGAN Dolphin’s kingdom is Animalia. Spinner dolphins are multi-cellular and heterotrophic so they are classified under Animalia. This means they rely on other organisms for food. The cells that frame these animals don’t have a cell wall and most of the cells are organized into tissues, which are then put into particular groups of organs for function. Dolphins can take part in many complex…

stem cells. Embryonic stem cells are pluripotent; they can develop into any cell in the body. It is best used to replace tissue or body parts. A lot of different organisms have similar looking embryos. Embryology is an evidence of evolution. The chordates of different organisms are similar because of…

Narwhals are part of the phylum Chordate and class Mammalia. They belong to the order Artiodactyla or even-toed ungulates which means they bare their weight on the third and fourth toe and the infraorder Cetacean which includes whales. Their family, Monodontidae, only includes Narwhals and Beluga whales. They are part of a one species genus called Monodon and their scientific name in Monodon Monoceros. Narwhals inhabit the cold deep waters of the Arctic Circle, mostly found in North Eastern…

Just like pores on human skin which absorb elements of the world around us, the holes all over the sponge’s body as essentially pores as well. The function of the holes all over the sponge’s body is to allow water to be absorbed into the sponge’s body. Through the absorption of water, the sponge also absorbs food and oxygen to ensure survival. There is no one set type of symmetry for sponges. Therefore, not all sponges have the same type of symmetry. Sponges can range from asymmetrical to…

Paleozoic began with the Cambrian Period about 53 million years best known for leading in an explosion of life on Earth. This Cambrian explosion encompassed the evolution of arthropods which are ancestors of today's insects and crustaceans, as well as chordates which are animals with rudimentary spinal cords. Vertebrates are a well-known group of animals that includes birds, amphibians mammals, fish, and reptiles. The vertebrates can be well described by their backbone, an anatomical feature…

Ophiothrix spiculata (a.k.a. spiny brittle stars) are the most diverse organisms in phylum Echinodermata that can be found in the ocean all over the world. They are spotted in many different colors such as orange, yellow, red, blue, black, or even tanned with reddish and white bands on their arms. Most spiny brittle stars have either round or star-shape body that are usually not larger than three centimeters. The body is called the central disk which consists of the dorsal shield (aboral side)…

Animals Have Souls Do animals have souls? Do people have souls? There are many differing definitions for the soul, and how can you begin to answer any of these questions without a chosen definition? Clarence Darrow’s “The Myth Of the Soul” and my secondary sources will conclude that yes, animals do have souls, and in fact, to think that they do not is much harder to believe. Jesus and Buddha praised vegetarianism because of a humans connectedness to all life (Jones-Hunt). Before eating meat…