Basic Tree Thinking Assessment (2)

6. Which of trees below is false given the larger phylogeny above?

7. Which of the four threes depicts a different pattern of relationships than the others?

8. Which of the four trees depicts a different pattern of relationships than the others?

9. In the given tree, assume that the ancestor had a long tail, ear flaps, external testes, and fixed claws. Based on the tree and assuming that all evolutionary changes in these traits are shown, what traits does a sea lion have?

a) long tail, ear flaps, external testes, and fixed claws
b) short tail, no ear flaps, external testes, and fixed claws
c) short tail, no ear flaps, abdominal testes, and fixed claws
d) short tail, ear flaps, abdominal testes, and fixed claws
e) long tail, ear flaps, abdominal testes, and retractable claws

10. In the above tree, assume that the ancestor was a herb (not a tree) without leaves or seeds. Based on the tree and assuming that all evolutionary changes in these traits are shown, which of the tips has a tree habit and lacks true leaves?

a) Lepidodendron
b) Clubmoss
c) Oak
d) Psilotum
e) Fern

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