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Free research papers and essays on topics related to: phylum

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  • Bacteria Outline - 1,338 words
    Bacteria Outline Bacteria - Oldest, structurally simplest, most abundant forms of life - Only organism with prokaryotic cellular organization - The only members of the kingdom Monera (4800 different kinds) - Characteristics change depending on growth conditions - Maintenance of life depends on them - play vital role of productivity and as decomposers - Capable of fixing atmospheric N for use by other organisms - Used in production and fermentation of various food and as antibiotics and is being tested for insect control - Prokaryotes vs. Eukaryotes - Multi-cellularity - All bacteria fundamentally single celled - Sometimes cells adhere within a matrix to form filaments - Activities of bacteri ...
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  • Biodiversity - 1,177 words
    Biodiversity Diversity Essay American biologist R. H. Whittaker in 1959 described a classification system of five primary kingdoms: plants, animals, fungi, protists, and monera. Kingdom animalia cover all taxonomic kingdom all living or extinct animals, an example of an animal is a human. Humans thrive off of one thing or another in each of the five kingdoms. The monera kingdom is the lowest division of rhizopods. Bacteria belong to this kingdom. There are many useful and harmful bacteria in the human body including those that are similar to amoebas. They dont have a nucleus. Plantae consist of all living or extinct plants (Plantae, kingdom Plantae, plant kingdom) the taxonomic kingdom that ...
    Related: biodiversity, humans evolved, animal kingdom, north america, specialized
  • Biology And Human Evolution - 1,381 words
    Biology And Human Evolution Human Biology and Evolution Humans are Alive The earliest human life form can be traced back more than 3.5 billion years ago. Humans are said to be descendants of a single celled ancestor. Although they are different in size and shape all basic functions are alike. The more complex the organization of the cell became the more successful and developed it became. As these single celled organisms developed they became known as pre-humans. We share many characteristics with these pre-humans. Some of these characteristics include the masters of heredity DNA and RNA as well as proteins composed of amino acids, membranes or bound cells and lastly controlled cell division ...
    Related: biology, evolution, human biology, human brain, human evolution, human life
  • Biology Instinct - 467 words
    Biology Instinct subject = biology title = Biology Instinct Insects are neumerout invertebrate animals that belong in the Phylum Arthropoda and Class Insecta. The class Insecta is divided into 2 subclasses: Apterygota, or wingless insects, and Pterygota, or winged insects. Subclass Pterygota is futher divided on basis of metamorphosis. Insects that have undergone incomplete metamorphosis are the Exopterygota. Insects that undergo complete metamorphosis are the Endopterygota. Insects have an outer bilateral exoskeleton to which the muscles are attached to and provides protection for internal organs. The body is divided into 3 main parts which are the head, which include mouthparts, eyes, and ...
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  • Brittle Star - 1,485 words
    Brittle Star BRITTLE STAR PHYLUM: Echinodermata SPECIES: Ophioderma panamense GEOGRAPHIC RANGE: From Peru and through Southern California HABITAT: They have been observed in the mid and low tide zones, abundant on the sea floor underneath rocks and in crevices and moving about tide pools and in available habitats in southern California NICHE: Omnivoire and filter feeder ADDITIONAL NOTES: Sometimes often called serpent starts due to their snake like movements. The mouth is located on the underside of the central disc. The aboral disc and arms are dark brown to black, and the disc is usually about 25mm. in diameter and the arms near 180 in length. They have rounded bodies with five slender, fl ...
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  • Classification - 1,138 words
    Classification Classification in biology, is the identification, naming, and grouping of organisms into a formal system. The vast numbers of living forms are named and arranged in an orderly manner so that biologists all over the world can be sure they know the exact organism that is being examined and discussed. Groups of organisms must be defined by the selection of important characteristics, or shared traits, that make the members of each group similar to one another and unlike members of other groups. Modern classification schemes also attempt to place groups into categories that will reflect an understanding of the evolutionary processes underlying the similarities and differences among ...
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  • Corals And Adaptations - 680 words
    Corals and Adaptations Coral reefs are among the most diverse and productive communities on Earth. They are found in the warm, clear, shallow waters of tropical oceans worldwide. Reefs have functions ranging from providing food and shelter to fish and invertebrates, to protecting the shore from erosion. Although many corals resemble plants, they are actually members of the animal phylum Cnidaria. Most corals are colonial, which means that each coral is made up of many individual polyps connected by living tissue (the coenosarc). Each polyp has a cup-like shape with a ring of tentacles around a central opening (pharynx) that functions as both mouth and anus. The tentacles are tipped with stin ...
    Related: coral reefs, symbiotic relationship, different types, important role, shallow
  • Elephant - 1,701 words
    Elephant The common name is the African Elephant, the scientific name is Loxodonta Africana, the phylum is Vertebrata, the class is Mammalia, the order is Proboscidea, and the family is Elephantidae. The Closest Relatives to the African Elephant are: the Asian Elephant, mammoths, primitive proboscidean (mastodons), sea cows, and hyraxes. Scientists believe that the African Elephant evolved from one of its closest relatives, the Sea Cow. The geographical location and range of the African elephant covers all of central and southern Africa. In Ethiopia there are isolated populations that exist around Lake Chad in Mali and Mauritania. Also in Kenya, Rhodesia, Tanzania, Zambia, Uganda, Zaire, and ...
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  • Green Turtle - 1,925 words
    Green Turtle Introduction The Green Turtle (Chelonia mydas) is one of the many species of turtles that inhabits the vast oceans. The green turtle is named for the greenish color of its fat found under its shell. It is a large, heavy reptile, usually about 0.7-1.0 m in shell length and about 90-140 kg in weight. The maximum length and weight are about 1.2 m and 375 kg respectively. (1) The green turtles upper shell is smooth and wide, the animal is brown, but when the light from the sun hits it, the green color from the fat is visible. The green turtle is found in warm, coastal waters around the world. (2) Sea turtles, in adaptation to an aquatic life, have limbs modified into flippers for ef ...
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  • Parasitic Flatworms - 1,561 words
    Parasitic Flatworms INTRODUCTION Imagine going to the doctor for a simple check up. Sure you've had some minor problems- indigestion, lack of energy, weight loss, and a bit of gas- but that's not out of the ordinary....or is it? In most cases you would be correct...but today is your unlucky day. The doctor has just informed you that you have a tapeworm parasite. PARASITIC CHARACTERISTICS By definition, a parasite is an organism that lives either in or on another organism. Infected organisms that are carrying a parasite are called host organisms- or hosts. This parasitic relationship can vary from benign to harmful- and sometimes even fatal. There are two main types of parasites: endoparasite ...
    Related: flatworms, parasitic, life cycle, different stages, meat
  • Salamander - 447 words
    Salamander The Salamander The salamander is a curious creature. Among the kingdom Animalia, they fall in the Phylum Chordate and in the Sub-Phylum vertebrata. Their Class is Amphibia, and their order is urodela. They are amphibians, which comes from Greek words meaning both life. This truly describes the life and life cycle of the salamander. The salamander, along with the newt, frog, and toad belong in the order Amphiba and all are ancestors to the first aquatic vertebrates to begin to colonize on land. Salamanders are found in the Americas and in the temperate zones of North Africa, Asia, and Europe. Often mistaken for lizards, salamanders have soft moist skin covering their long bodies an ...
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  • Scientific Classification - 922 words
    Scientific Classification annon Classification is grouping together similar things. It is something that you have done in your daily life since you were a child. There are many different ways to classify organisms. There are aquatic and terrestrial animals. Certain plants can be grouped together as either trees or shrubs according to their outward appearance. Using these methods is useful for some purposes. Generally it is more useful to classify organisms in accordance with their relationships with one another. More to the point the systems discussed today are the ones used universally and based upon Carolus Linnaeus' original work. Carolus Linnaeus is probably the single most dominant figu ...
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  • The Hagfish - 419 words
    The Hagfish The most disgusting creature on Earth. The Hagfish is known to those who know of it as the most disgusting creature on Earth, a reputation well earned. The Hagfish or known also as the slime eel to fisherman who are unlucky enough to get one in their fish, live between depths of 60m and 1300m. The live in soft bottoms, in boroughs, with only their head sticking out. the Hagfish depending on type (their are 2 types: Eptatretidae and Myxindae) range anywhere from 12-40 inches. hagfish off the Californian coast are common, being centrally populated around the Monterey bay area the Eptatidae live in all oceans, and the Myxondae live in all oceans as well, excluding the North Atlantic ...
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  • The Tiger Shark - 542 words
    The Tiger Shark Joe Barger Science III December 10, 1999 The Tiger sharks name derives from the distinctive dark bands that run from the top of its back down along its sides. The stripes are very evident in younger sharks because the stripes start to fade away as it ages, then turning a gray or brownish color. However, all of the Tiger sharks have an off-white ventral surface. The Tiger sharks scientific name, Galeocerdo cuvier, consists of its Genus, Galeocerdo, and Species, cuvier, names. The Tiger shark belongs to the Kingdom Animalia, Phylum Chordata, Subphylum Vertebrata, Class Chondrichthyes, and Family Carcharhinidae. Tiger sharks can grow in size up to 20 feet (6m) and in weight 800 ...
    Related: shark, tiger, south africa, great white, gestation
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