[Get Answer] Describe the three types of mammals based on how their young develop.

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, Anthropoda,
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.

Part 2: Answer the following questions as they
relate to the nine phyla in the assignment table.

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 from the most primitive to more
advanced types of fish.
Describe the three types of mammals based on how their young
develop.

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