Exam 2

Question 1

Was Pangea in the process of forming, or in the process of breaking up during the Mesozoic?

Answer 1

It was breaking up due to movement of plate tectonics.

Question 2

What types of trees lived during the Mesozoic?

Answer 2

Conifers and Ginkgos

Question 3

Did any mammals live during the Mesozoic? If so, what kinds?

Answer 3

Yes, mostly shrews, rats, and mice. Small Rodents.

Question 4

What physical characteristics did plants develop to help them live on land?

Answer 4

Rigid stalk or stem, Root system, earliest simple rigid stems, near water

Question 5

What physical characteristics did plants develop to help them live on land?

Answer 5

Rigid stalk or stem, Root system, earliest simple rigid stems, near water

Question 6

What two major animal groups have Icthyostega as a common ancestor?

Answer 6

Amphibians & Reptiles

Question 7

Explain the difference between Saurischians and Ornithischians.

Answer 7

Saurischians have lizard-like pelvis, includes theropods and saurodomorphs. Ornithischians have a bird-like pelvis, includes diverse types.

Question 8

Dinosaurs belong to the Tetrapod group, T or F?

Answer 8

True, dinosaurs have 4 limbs.

Question 9

Dinosaurs belong to the Pterasaur group, T or F?

Answer 9

False, Pterasaurs fly, Dinosaurs don’t.

Question 10

Dinosaurs belong to the Ornithodirans group, T or F?

Answer 10

True

Question 11

Dinosaurs belong to the Diapsid group, T or F?

Answer 11

True

Question 12

Dinosaurs belong to the Thecodonts group, T or F?

Answer 12

Term is outdated, but True

Question 13

Dinosaurs belong to the Crocodilians group, T or F?

Answer 13

False

Question 14

Dinosaurs belong to the Archosaurs group, T or F?

Answer 14

True

Question 15

Dinosaurs belong to the Reptiles group, T or F?

Answer 15

True