Background: Cladograms and phylogenetic trees are very similar. Often times cladograms are hypothetical and do not show exact evolutionary history as a phylogenetic tree would, but show shared traits. They are interpreted the same way

Question

Directions: Answer the six questions in the table below using the cladogram provided to the right. Note: If your answers “fall off the slide”, just make your font smaller.

1. Name three organisms that have amniotic eggs.
1.
2.
3.
4. Name the two organisms in this tree with spiny-rayed fins.
1.
2.
2. Which two animal(s) can molt their exoskeleton?
1.
2.
5. Name all the characteristics/traits that lizards and birds share.

3. Name all organisms in this tree that have lungs.

6. Which pair of organisms are most closely related? Highlight the correct pair.
Lobster and birds Perch and lizards

Birds and spiders Lizards and birds

Answer 1

Based on the typical characteristics shown in cladograms, here are the answers to your questions:

1. Name three organisms that have amniotic eggs.

   1. Lizards
   2. Birds
   3. (Include any additional organism that is represented in the cladogram known to have amniotic eggs, such as reptiles or mammals, if applicable.)

2. Name the two organisms in this tree with spiny-rayed fins.

   1. Perch
   2. (List any other organism in the cladogram that also shows spiny-rayed fins, if applicable.)

3. Which two animal(s) can molt their exoskeleton?

   1. Lobster
   2. (Include any additional organism that may also be shown to molt their exoskeleton, if applicable.)

4. Name all the characteristics/traits that lizards and birds share.

   • Amniotic eggs
   • Lungs
   • (List any other specific traits mentioned in the cladogram.)

5. Name all organisms in this tree that have lungs.

   • Lizards
   • Birds
   • (Add any additional organism with lungs, such as reptiles or mammals, if applicable.)

6. Which pair of organisms are most closely related? Highlight the correct pair.

   • Lizards and birds

This completes the response using the underlying cladogram hypothetical interpretations. If there are any specific organisms or traits shown in the cladogram that were not listed here, please provide those details for more tailored answers.