Question

cladogram practice questions
which organisms represented by the cladogram below have lungs?
lamprey bony fish snake crocodile bird
1 jaws
2 lungs
3 lays eggs
4 feathers
a lamprey
b bony fish
c snake
d crocodile
e bird

Explanation:

In the cladogram, the trait "Lungs" is marked after the split - point from bony fish. Organisms that branch off after this point have lungs. Lamprey and bony fish are before this point and do not have lungs. Snake, crocodile, and bird are after the "Lungs" trait marker on the cladogram, so they have lungs.

Answer:

C. Snake, D. Crocodile, E. Bird