Echinoderms

Aristotle had a humungous importance in the field of science. Biology was one area that Aristotle supplied his knowledge greatly . On Famousscientist.org “Aristotle was very fascinated about dissecting animals and started to realize many similarities in animals.” Aristotle was known to be one who would not be afraid to get his hands dirty in the name of science. Because of these dissections Aristotle would keep track of the similarities and started to realize some animals were similar than others

become extremely curious about how their bodies operate because of how they are made up. I will give a brief synopsis of all animals before going into major detail about them. According to the online website named dictionary.com, Starfish are any echinoderm of the class Asteroidea, having the body radially arranged, usually in the form of a star, with five or more rays or arms radiating from a central disk; asteroid (dictionary.com). It is known that a chordate is an animal belonging to the phylum

Organ Systems Project (Digestive, Excretory, Circulatory, Reproductive, Nervous) There is an enormous variety of life on our planet Earth ranging from simple cell bacteria to complex multicellular animals. Animals are creatures in the kingdom Animilia, one of the kingdoms in Whitakers 5 kingdom system. Their bodies consist of 555tanimal eukaryotic cells. Meaning their cell or cells contain a nucleus, are surrounded by a cell membrane (phospholipid bilayer) and can self-reproduce in a free

lacks a vertebral column which is also called a backbone11. Every phylum of invertebrates has its own special characteristics, for example cnidarians, of the phylum Cnidaria, have special stinging organs called nematocysts. While invertebrates like echinoderms, of the phylum

months of March to late June. Usually found on rocky and sandy coasts and estuaries, inland wetland habitats, such as lakes, ponds, rivers, wet fields and a wide range of fish species, squid, the, Jonah, rock and green crabs, sea urchins, starfish, echinoderms, crustaceans and mollusks. They are usually found in the Northwest of Russia, coastal areas of Scandinavia, Baltic Sea coasts, northwestern coast of France, UK, Ireland. North Atlantic, Iceland, southern Greenland, Atlantic coasts of Canada and

The Permian Time frame was the last time of the Paleozoic Time. Enduring from 299 million to 251 million years back, it took after the Carboniferous Time frame and went before the Triassic Time frame. By the early Permian, the two-extraordinary mainland’s of the Paleozoic, Gondwana and Euramerica, had crashed to frame the supercontinent Pangaea. Pangaea was formed like a thickened letter "C." The best bend of the "C" comprised of landmasses that would later wind up present-day Europe and Asia. North

The phylum Echinodermata is comprised of 5 classes which encompass a wide variety of species, it is estimated that there are 6500 extant species with the majority of them being marine (Pechenik, 2005). The 5 classes include Asteroidea these are the sea stars, Ophiuroidea the brittle stars, Echinoidea the sea urchins, Holothuroidea the sea cucumbers and Crinoidea the sea lilies and feather stars. There is a rich fossil record for the phylum Echinodermata due to their possession of calcareous ossicles

Fossil Evidence Fossil evidence is a great way to analyse the effects of evolution. The first statement posed by somebody when a person trying to prove a point is: prove it. Fossil evidence does just that by providing proof in the forms of preserved life-forms which previously inhabited the earth. The stratigraphic column is a layering of sedimentary rocks which contain fossils in them (McMullen et al., 2014). The erosion of these rocks carves through this layering to provide a timeline of fossils

Chapter 29 Quiz | Question 1 | Signaling proteins that alert the immune system an infection is present and that sometimes directly fight pathogens are the: | | complement proteins. | | | antihistamines. | | | antibodies. | | | cytokines. | | | histamines. | Question 2 | Which cells in the immune system produce memory cells? | | lymphocytes | | | eosinophils | | | mast cells | | | dendritic cells | Question 3 | Histamine causes which of the following

a very mild climate. The supercontinent Rodinia began to break into smaller parts, or continents. Lots of glaciation occurred so many animal families went extinct. • All phyla develop during this time period. Many marine animals, shell-fish, echinoderms, and some of the earliest fish appear. • Lots of glaciation occurred wiping out many animal families marking the end of the Cambrian period. Ordovician: • This period started 505 million years ago and ended 438 million years ago. • Many primitive