Taxonomy Scientific Taxonomy and Biodiversity Essay

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67). Two additional mammals that belong to these two orders are the zebra and the donkey (Perissodactyla) and the jaguar and the bobcat (Felidae).

A other insects are the boll weevil and the ladybug; in the order of Hymenoptera, two other insects are bees and wasps.

As to birds, they all share four specific characteristics, being that they have feathered wings (although some birds are flightless like the penguin), beaks, stereoscopic vision and are endothermic or warm-blooded. The differences between the pelican and the eagle are that pelicans generally live in a marine, saltwater environment and eat mostly fish, while the eagle lives predominantly in forested or mountainous areas and eats not only fish but also various land animals such as rabbits and other small mammals. As to order, the pelican belongs to Pelecanidae, due to exhibiting a pouch under their beaks, while the eagle belongs to Accipitriformes, due to being a bird of prey with a powerful beak and talons designed for tearing away flesh. Two other species related to the pelican include cormorants and frigatebirds; to the eagle, buzzards and hawks. As to echinoderms (the starfish and the sea urchin), the three shared characteristics include living in a marine/salt water environment, having endoskeletons and possessing "projections known as tubed feet which helps with movement and with feeding" (Thompson, 2004, p. 186). As to differences, the starfish has five arms and exhibits what is known as radial symmetry, thus the term "star" applied to their appearance, while the sea urchin had many external spines and exhibits fivefold symmetry or pentamerism.

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As to order, the starfish belongs to various orders, such as Forcipulatida and Spinulosida; likewise, so does the sea urchin which belongs to Atelostomata, Diadematoida or Echinacea, all being superorders. Also, the starfish and the sea urchin are placed in these orders due to having tubed feet and because they have a water vascular system which helps with movement on the sea floor (Thompson, 2004, p. 187). Various species related to the starfish include the brittle star and several species of "sea stars;" with the sea urchin, sea cucumbers and crinoids.

Smith, Thomas a. (2005). Scientific taxonomy and its nomenclature. New York: Houghton-

Mifflin Publishers.

Thompson, Michael K. (2004). Encyclopedia of biology….....

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