Changes - Lecture 7

Question 1

Describe the differences between mammals and reptiles

Answer 1

Mammals have hair, are warm blooded, upright posture and suckle their young. Reptiles have scales, are cold blooded, sprawling posture and do not suckle

Question 2

What are the differences in dentition between mammals and reptiles?

Answer 2

Mammals have differentiated teeth with a single jaw bone. Reptiles have rows of similar teeth and several lower jaw bones

Question 3

Name the two orders of dinosaur

Answer 3

Saurischia and Ornithischia

Question 4

Name the three orders of dinosaur and identify the carnivores

Answer 4

Theropods, Sauropods and Ornithischia. Theropods are carnivores

Question 5

Give an example of a theropod, a sauropod and an ornithiscian dinosaur

Answer 5

Theropod - T-Rex, Sauropod - Diplodocus and Ornithischians - Iguanadon

Question 6

What were conditions like during the Triassic period?

Answer 6

One hot, dry super continent known as Pangaea

Question 7

What kind of fauna and flora existed during the Triassic?

Answer 7

Fauna - Small dinosaurs, tiny nocturnal mammals, ichthyosaur (marine reptile) in seas Flora - ferns, cycads and early conifers abundant

Question 8

When did the Archaeopteryx first develop?

Answer 8

The middle of the Jurassic period

Question 9

Angiosperms originated in the Cretaceous period. What are they?

Answer 9

Flowering plants