Sample Essay on:
Arthropoda

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Essay / Research Paper Abstract

5 pages in length. Considered the most adaptable animals in the world, arthropods are as diverse as the environment in which they live. That they exist on land, under the sea or in the air speaks to their unprecedented compatibility with the earth's many and varied topography. Representing an entire three-quarters of all living and fossil organisms known to man, which equates to more than one million identified species overall, the true number of arthropods species is suspected to be between six and nine million due to the untold numbers yet to be discovered in such terrain as tropical rain forests. Bibliography lists 6 sources.

Page Count:

5 pages (~225 words per page)

File: LM1_TLCarthr.rtf

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Unformatted sample text from the term paper:

the earths many and varied topography. Representing an entire three-quarters of all living and fossil organisms known to man, which equates to more than one million identified species overall, the true number of arthropods species is suspected to be between six and nine million due to the untold numbers yet to be discovered in such terrain as tropical rain forests (Thomas, 1990). Arthropods - meaning "jointed feet" (Eldredge, 1984, p. PG) - are as varied in size and shape as they are in where they live; depending upon the species, arthropods are found under the ocean or at the highest mountaintop, ranging from the most microscopic entity to one that spans twelve feet across. Such diversity notwithstanding, the fundamental body composition is virtually the same for every member of the arthropod family, which include four distinct subgroups: 1. Insects: bees, butterflies, beetles, ants, moths, praying mantises, cicadas, cockroaches, fleas, wasps and flies. 2. Arachnids: spiders, scorpions, pseudoscorpions, ticks and mites. 3. Crustaceans: crabs, shrimps, prawns, lobsters, crayfish and slaters. 4. Myriapods: centipedes and millipedes (Eldredge et al, 1984). Tagmosis is the name given for the arthropods segmented body, which displays different fusion patterns that ultimately create the connected components, such as the head, legs and abdomen). Made of a protein and chitin combination, the stiff cuticle that comprises the arthropods outer structure is part of what is called the exoskeleton, which aid in the unique movement attributed to the animals distinctively jointed appendages (Thomas, 1990). The exoskeleton also offers significant protection against external dangers, as well as forms the framework for the arthropods body. The diversity of body parts stretches across the myriad species, with insects, millipedes and centipedes reflecting uniramous (single) appendages, while ...

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