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Experience:  Doctoral Candidate and Adjunct Prof. of Biology
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Animals are placed in taxonomic classifications based on differences

Resolved Question:

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, 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 has more species than all the others. State the name of this phylum and provide several different examples of species found in this phylum.
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.
Describe the three types of mammals based on how their young develop
Submitted: 4 years ago.
Category: Homework
Expert:  Andrea replied 4 years ago.

HelloCustomer

 

I can answer this question for you. However, can you provide a link to the U5IP_Table and the dichotomous key? I will at least need the table, because I can probably find the dichotomous key elsewhere.

 

Thanks!

AndreaSBP

Customer: replied 4 years ago.
Unit 5 Individual Project
Name:
Date:
     
There are 9 Organisms in Nine Different Phyla.
     Organism     Phyla     Dichotomous Key (steps)     Classification
1                     
2                     
3                     
4                     
5                     
6                     
7                     
8     
Image Rights: Allen G.
Collins and the UC Museum of Paleontology               
9     
Image Rights: Courtesy of University of Minnesota               

Customer: replied 4 years ago.
               
There are 9 Organisms in Nine Different Phyla.
     Organism     Phyla     Dichotomous Key (steps)     Classification
1                     
2snail                     
3worm                     
4bee                     
5                     
6starfish                     
7snake                     
8     
Image Rights: Allen G.
Collins and the UC Museum of Paleontology               
9     
Image Rights: Courtesy of University of Minnesota               


               

Expert:  Andrea replied 4 years ago.
Customer

 

I think I need teh dichotomous key that you are provided with, since the table asks which steps were used. You might be able to copy and paste it. As soon as I get that, I can get this done for you.

 

Thanks!

AndreaSBP

Expert:  Andrea replied 4 years ago.

Oops, also you only told me what 5 of the 9 pictures on the table were, so I need the others as well.

 

Thanks,

AndreaSBP

Customer: replied 4 years ago.
1 is the clear animal in salt water that sting
8 is a catapellia looking thing
i am unsure what the other two are 9 looks like a tapeworm almost

Couplet Number     Couplet Choices     Classification
1.     a. Symmetry is irregular (neither bilateral or radial); aquatic; body structure without tissues or organs Phylum Porifera     Phylum Porifera
     b. Symmetry is radial or bilateral      2

2.     a. Radial symmetry; lacks a well defined head     3


     b. Bilateral symmetry (similar right and left body halves; anterior head end and posterior tail end)      6

3     a. No spines or arms present      4

     b. Spines or arms present     5

4     a. Barrel-shaped body, tentacles at one mouth end; adults attached to a substrate     Class Anthozoa
     b. Saucer-shaped, transparent body with tentacles, free floating      Class Scyphozoa
5     a. Five arms present, body surface knobby      Class Asteroidea
     b. Many-spined animal, resembles a pincushion      Class Echinoidea
6     a. Animal has no apparent skeleton, or may have an exoskeleton (hard outer covering), or may have a shell (invertebrate)      7

     b. Animal has internal skeleton (vertebrate)     16

7     a. No hard outer covering, exoskeleton, or shell; worm-like     8

     b. Hard outer covering, exoskeleton, or shell; not worm-like     11

8     a. Body is segmented     Phylum Annelida
     b. Body is not segmented     9

9      a. Body long and tubular     Phylum Nematoda
     b. Body flattened      10

10     a. Free living, aquatic, ribbon-like, smooth      Class Turbellaria
     b. Endoparasites (live inside host); may look segmented;      Class Cestoda
11     a. No jointed appendages     12

     b. Jointed appendages     14

12     a. Soft body inside bivalve shell (hinged shell with 2 halves); no head      Class Bivalvia
     b. Soft body, obvious head     13

13     a. May or may not have a shell; head with tentacles, small eye or eye spot     Class Gastropoda
     b. Head with tentacles and large eyes present      Class Cephalopoda
14     a. Two pairs of antennae, large claws often present      Class Crustacea
     b. One pair of antennae or none, no large claws      15

15     a. Four pairs of legs, no antennae or wings      Class Arachnida
     b. Three pairs of legs; wings present      Class Insecta
16     a. Fishlike, flattened body; appendages finlike not jointed      17

     b. Not fishlike, body not flattened; appendages jointed or absent      18

17     a. Fish, scales on body do not overlap; skeleton of cartilage      Class Chondrichthyes
     b. Fish, scales on body overlap; skeleton bony      Class Osteichthyes
18     a. Body covered by scales; zero or four legs      Class Reptilia
     b. Body not covered by scales      19

19     a. Claws absent      Class Amphibia
     b. Claws or nails present on toes; skin covered with feathers or hair     20

20     a. Feathered, claws present      Class Aves
     b. Hair present      Class Mammalia

Expert:  Andrea replied 4 years ago.
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