Characteristics of the phylum, reproduction, and importance
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http://search.yahoo.com/search?p=zoomastigina&sm=Yahoo%21+Search&fr=FP-tab-web-t&toggle=1&cop=&ei=UTF-8
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http://www.nps.gov/grsm/pphtml/nature.html\n\nHope this helps some
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A symbiotic relationship in which both species benefit.
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1. Nervous system\n2. The heart beat\n3. Fossils
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Go to this website, you will find all the answers you need:\n\nhttp://plato.stanford.edu/entries/genotype-phenotype/
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3. populations that have the potential to interbreed and produce fertile offspring.\n\nnumber 1 could be a taxon, number 2 could be a population, 4 is allopatric organisms, and 5 is organisms in the same niche.\n\nof course, 3 gets fuzzy as soon as you want to talk about organisms with the ability to clone themselves, like bacteria... but generally the definition is a group of organisms that have the ability to interbreed and produce fertile offspring.
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5. symbiotic organism\n6. cellular biology\n\ncheck out the site below.
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I can help you if you need it, I'm a senior biology major. Email my nickname (akidagurl84) at yahoo.com. Hope I can help.
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You might try posting this question in the general biology area, it seems to get a bit more traffic than over here. Good luck.
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These are the classes of Chordata : \n\nPhylum Chordata\n\n    * Subphylum Urochordata - Tunicates\n    * Subphylum Cephalochordata - Lancelets\n    * (unranked) Craniata (animals with skulls)\n          o Subphylum Vertebrata (Vertebrates - animals with backbones)\n                + Class Myxini or Hyperotreti (hagfish)\n                + Class Conodonta (Conodonts)\n                + Class Cephalaspidomorphi (Paleozoic jawless fish)\n                      # Hyperoartia (lampreys and kin)\n                + Class Pteraspidomorphi (other Paleozoic jawless fish)\n                + Infraphylum Gnathostomata (jawed vertebrates)\n                      # Class Placodermi (Paleozoic armoured forms)\n                      # Class Chondrichthyes (cartilaginous fish)\n                      # (unranked) Teleostomi (advanced fishes and their descendents)\n                            * Class Acanthodii (Paleozoic "spiny sharks")\n                            * Class Actinopterygii (ray-finned fish - Osteichthyes in part)\n                      # Class Sarcopterygii (lobe-finned fish - Osteichthyes in part))\n                            * Superclass Tetrapoda (four-legged vertebrates)\n                                  o Class Amphibia (amphibians)\n                                  o Series Amniota (amniotic egg)\n                                        + Class Synapsida (mammal-like reptiles)\n                                              # Class Mammalia (mammals)\n                                        + Class Sauropsida - (reptiles)\n                                              # Subclass Anapsida\n                                                    * Order Testudines (turtles)\n                                                    * Subclass Diapsida (most modern reptiles)\n                                                          o Superorder Lepidosauria (lizards, snakes, tuatara)\n                                                          o Division Archosauria ("ruling reptiles")\n                                                                + Order Crocodilia (crocodiles, alligators, caimans, gharials)\n                                                                + Superorder Dinosauria\n                                                                      # Class Aves (birds)
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1)water\n2)sun light\n3)Mineral nutrients\n4)Oxygen\n5)CO2\n6)Optimum Temperature\n7)Less Competition\n8)Ecological adaptations\n9)Soil or good substratum\n10)Role in local ecosystem
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http://www.newton.dep.anl.gov/newton/askasci/1993/biology/bio021.htm
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introduction, body, conclusion
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try google images... some great pic and anatomical diagrams
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you can go on the internet and plug in the search bar "Kingdom Protista" or "phylums of protista.
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The six characteristics of living things, and an explanation of each one. \nTheme #1 - Cells \n\nAll living things are composed of one or more cells. Different types of cells have different "jobs" within the organism. Each life form begins from one cell, which then will split. These cells split, and so on. After this has happened several times, differentiation is undergone, when the cells change so that they are not the same thing anymore. Then they are used to begin to put together the final organism, some cells, for example, as the eyes, some as the heart, etc. The only arguable exception to this is viruses. They are not composed of cells, but are said to be "living." \nTheme#2 - Organization \n\n \nComplex organization patterns are found in all living organisms. They arrange themselves on very small levels, grouping like things together. On larger levels, they become visible. This also has to do with differentiation, as the cells are organized in a manner that makes sense for the organism after they change to what they’ll be in the final organism. \n\nTheme#3 - Energy Use \n\nAll organisms use energy. The sum of the chemical energy they use is called metabolism. This energy is used to carry out everything they do. Autotrophs (plants) use energy from the sun for photosynthesis, to make their own ‘food’ (glucose). Heterotrophs (animals and humans) must ingest food for this purpose. \n\n\nTheme#4 - Homeostasis \n\nAll organisms have stable internal conditions which must be maintained in order to remain alive. These include temperature, water content, heartbeat, and other such things. In a way, this has to do with energy use, because a certain level of energy must be kept within the body at all times. For this, obviously, humans must then ingest food on a regular basis. Not all conditions are for the body to maintain itself; though most are. \n\n\nTheme#5 - Growth \n\nAll organisms grow and change. Cells divide to form new, identical cells. Differentiation happens, as well, when cells mutate into other types of cells, making a more complex organism. Organisms growing, changing, and becoming more complex is called development. Single-celled organisms do grow as well, but they will only become slightly larger – this is nearly unmeasurable. \n\n\nTheme#6 - Reproduction \n\nAll organisms reproduce in order to continue the species' life. This is combining genetic information (in sexual reproduction) or splitting into two organisms (in asexual reproduction) in order to create another of the same species. In sexual reproduction, the new organism will have some characteristics from the mother, and some from father. It may look like either of them, or it may not. In asexual reproduction, the new organism is an exact copy of the first. Sometimes, not every member of a species is able to reproduce. As long as others are (which we know they can, if they still exist today) then it does not threaten the species. (Except for mules, but don't worry about them, they are a bizarre anomoly.)
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Try this site.  It has a lot of information including a diagram:\n\nhttp://www.ucmp.berkeley.edu/phyla/ecdysozoa/nematoda.html