need help plz due in 2hrs. biology hw?

Animals are placed in taxonomic classifications based on differences and similarities of their traits. If you know what critical traits to look for, it is possible to separate any animal into a taxonomic category. The common categories are Domain, Kingdom, Phylum, Class, Order, Family, Genus and Species (Specific Epithet.) Example: Human Classification Domain: Eukarya Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Primates Family: Hominidae Genus: Homo Species: sapiens Scientific name: Homo sapiens Part 1: The assignment document contains a table with images. The images are examples of nine Animal Phylum: Porifera, Cnidaria, Nematoda, Athropoda, Platyhelminthes, Annelida, Mollusca, Echinodermata, and Chordata. Download U5IP_Table. Next, Download Dichotomous Key Use the Dichotomous Key to determine the taxonomic category (phylum or class as shown on the key) for each animal (picture), and write these categories under the Classification Column on the table. You will also need to list the phylum for each animal picture in column one; and list in column 2 all the steps chosen when using the key to arrive at the classification for each animal. For help on how to use the Dichotomous Key, download and review the document called How to use the Dichotomous Key. Save a copy of the table with your name in the file name. Part 2: Using text Chapters 23 and 24 answer the following questions as it relates to the nine phyla in the assignment table. (Porifera, Cnidaria, Nematoda, Arthropoda, Platyhelminthes, Annelida, Mollusca, Echinodermata, and Chordata.) 1. Which phyla lack organs? What type of symmetry do they have? 2. List all of the phyla that show cephalization? 3. Do all organisms on the table have 3 germ layers (endoderm, ectoderm and mesoderm)? If not, which Phyla have fewer than three germ layers? 4. One phylum has more species than all the others. State the name of this phylum and provide several different examples of species found in this phylum. 5. According to chapter 24, fish do not all have the same skeletal structure. Describe the differences among fish from the most primitive to more advanced types. 6. Describe the three types of mammals based on how their young develop. For information on Macintosh Word shortcuts, click here. Please submit your assignment. ty so much i can now continue on

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• EWW oddly I REMEMBER THIS WORKSHEET 1.The phyla that lack organs and have an asymmetrical form are: Sponges 2.The first one was Platyhelminthes. Then nematoda, annelida, mollusca, arthropoda, and chordata. 3.Sponges and cnidarians do not contain all three germ layers. All other animals do. Flatworms, roundworms, mollusks, annelids, echinoderms, chordates, arthropods all hace three layers. 4Phylum Arthropoda (arthro = joint; poda = foot) is the most numerous phylum of all living organisms, both in number of species and in number of individuals. One, very conservative, estimate is that there are well over one million species of insects alone. In terms of number of individuals, there are more ants than anything else, and in terms of numbers of species, there are more kinds of beetles than anything else: 40 to 50% of all insect species are beetles. There are more species of insects than all other plants and animals together. Also crustaceans eg.crabs. Plus centipedes, millipedes,mites, spiders. 5.Look over a phylogenic tree and you will see that Sarcopterygians are fleshy-finned (lobe-finned) fish while Actinopterygians are ray-finned fish but both groups have bony jaws. The other main branch, the Chondrichthyes, does not have calcified bones but a cartilage-based skeleton. Actinopterygii Sarcopterygii Chondrichthyes… 6. Three types of mammals, three ways to be born. The three surviving mammal groups had one elemental difference: each bore their offspring in a unique way. Monotremes, such as the platypus, hatch from eggs. Marsupials, such as the kangaroo and opossum, are born before they are fully developed and continue development outside the womb, often in a pouch. Placentals, such as humans, horses, dogs, etc., develop completely in their mother’s wombs before they are born. Today, placental mammals are by far the largest and most diverse mammal group. The roots of that diversity go back more than 60 million years .