Biodiversity of animals

Question 1

Amphibians

Answer 1

no amniotic egg and skin is permeable so they must always be in water
-modern include; salamanders, frogs and caecilians

Question 2

Amniotic egg

Answer 2

Allowed early tetrapods to live on land

Question 3

Diapsid

Answer 3

two holes behind skulls, lineage of reptiles that include turtles, lepidosaurs (snakes), ichthyosaurs (dolphin like), archosaurs (Dinos)
-Nothing that flew and nothing that was aquatic was a dinosaur

Question 4

Synapsid

Answer 4

one hole behind skull, lineage that mammals are evolved from

-early are mammal-like reptiles

Question 5

Monotremes

Answer 5

Egg laying mammals, only two modern groups, occur in Australia and New Guinea, EX; platypus

Question 6

Marsupials

Answer 6

Don’t lay eggs or have placenta, fetus grows outside of body, modern species almost exclusively Australia, EX; kangaroo

Question 7

Anapsides

Answer 7

No holes behind skull, reptile lineage

Question 8

Three major ornithischians

Answer 8

Ornithopods (bird-footed dino), Marginocephalians (Fringe-headed dino), Thyreophorans (armored dinosaurs)

Question 9

Saurischians

Answer 9

Sauropods (long necks), Theropods (velociraptor), Birds

-Feathers are modified scales