Organisms 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 using a dichotomous key.
The common taxonomic categories are Domain, Kingdom, Phylum,
Class, Order, Family, Genus and Species (Specific Epithet.) We are
looking at the Phylum and Class categories in this assignment.
Assignment details:
Part 1: The assignment document contains a table with nine
images. The images are examples of nine different Animal phyla:
Porifera, Cnidaria, Nematoda, Arthropoda, Platyhelminthes,
Annelida, Mollusca, Echinodermata, and Chordata.
Download U5IP_Table. Next, Download Dichotomous Key Use the
Dichotomous Key to determine the Class category as shown for each
animal (picture), and write the Class names under the
Classification Column on the table. List in column 2, all of the
dichotomous key steps you chose when using the key to arrive at the
classification for each animal.
You will also need to list the Phylum name for each animal
picture in column one using the nine Phyla listed above. Once you
have identified the Class category for each animal using the Key,
look up the correct Phylum category using a credible reference.
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: Answer the
following questions as they relate to the nine phyla in the
assignment table. (Porifera, Cnidaria, Nematoda, Athropoda,
Platyhelminthes, Annelida, Mollusca, Echinodermata, and
Chordata.)
Which phyla lack organs? What type of symmetry do they have?
List all of the phyla that show cephalization. Do all organisms on
the table have 3 germ layers (endoderm, ectoderm, and mesoderm)? If
not, which phyla have fewer than three germ layers? One phylum on
the table has more species than all the others. State the name of
this phylum, and provide several different examples of species
found in this phylum. Fish do not all have the same skeletal
structure. Describe the differences among fish skeletal structures
from the most primitive to more advanced types of fish. Describe
the three types of mammals based on how their young develop.
Provide references in APA format. This includes a reference list
and in-text citations for references used throughout the
assignment.
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