Unformatted text preview: Answers to Vert tree execise.pdf 1.
6. Lung or derivative
Sep Pulmonary & Systemic Circ
Bipedalism (Sorry, this one was
confusing and I should not have used it.
Although some dinosaurs walked on all
fours, they appear to have descended
from earlier forms that were more-orless bipedal. All of the meat-eating
dinosaurs, including the apparent
ancestors of birds were bipedal and all
birds are bipedal.)
8. Hollow Bones
10. Teeth are lost
13. Mammary Glands
14. Oviparous Mammal
16. Placenta ...
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