Biology Cladogram Worksheets 4-18-12
Biology Cladogram Worksheets 4-18-12
*You will need headphones for this set of worksheets. View the movie that shows you how to construct a cladogram below. You will need this set of skills to do the second and third set of worksheets.
*Now open the link below and answer the questions regarding the 2 cladograms contained on this site.
Cladogram 1
1. After which animals did mammary glands develop?
2. What animal does not have jaws?
3. Which animals have lungs?
4. Which animals are probably predators?
5. After which animal did protection from the elements arise?
6. What other animals would come after the chimp?
7. Which animals would come before the hagfish?
Cladogram 2
1. What does all life stem from according to this picture?
2. What major group came before animals?
3. What group are mammals from?
4. Which came first the chicken or the egg?
5. What is the first amniote?
6. Which animals are considered vertebrates?
7. What organisms are non-flowering plants closely related to?
8. What organisms are insects closely related to?
Cladistics Lab
Consider the following characteristics when designing your cladogram. The terms in bold should be included on your cladogram. Be sure all of your animals are arranged at the top of the cladogram and the distinguishing characteristics are listed.
Define the following terms using your book or the internet:
- vertebrae
- amniotic egg
- exoskeleton
- live birth
- opposable thumbs
- exoskeleton
- wings
You are a scientist trying to determine the relationship between the organisms below. Using your knowledge of cladistics on a separate sheet of paper create a cladogram that represents how these animals are related. Make sure to put your name, date, hour and class on it then hand it in when you are done.
1. Divide the animals into two groups depending on if they possess vertebrae.
2. Divide the vertebrates into groups according whether they have an amniotic egg or not. (Hint: keep the animals who give live birth with the amniotic egg animals.)
3. Divide those who have amniotic eggs according to the presence of an exoskeleton.
4. Divide those with endoskeleton according to whether or not they give live birth.
5. Divide those with live birth depending on if they possess opposable thumbs.
6. Return to your invertebrates. Divide them according to the presence of an exoskeleton.
7. Divide those with exoskeletons according to whether they possess wings.
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Owl Turtle Spider Butterfly
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Chimpanzee Octopus Toad Elephant
[pic]
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